Is Radiation From Our Devices Dangerous? | Talking Point | Full Episode

Summary

This video explores the effectiveness of anti-radiation products, which claim to shield us from radio frequency electromagnetic fields (RF-EMF) emitted by wireless devices like mobile phones. The script interviews experts, tests the radiation levels of various phones, and examines the safety of common household devices. It reveals that while these devices meet international safety guidelines, some anti-radiation products do little to reduce exposure. The video concludes that maintaining distance from active devices and limiting usage time are practical ways to minimize RF-EMF exposure.

Takeaways

• 📈 Sales of anti-radiation products in Singapore have quadrupled over the past five years.
• 📱 Devices like anti-radiation stickers claim to protect against radio frequency electromagnetic fields (RF-EMF) emitted by wireless devices such as mobile phones.
• 🤔 Many people are unaware of RF-EMF and the warnings about radiation exposure that come with their phones.
• 🌐 RF-EMF is non-ionizing, meaning it doesn't have enough energy to damage cells, unlike ionizing radiation like X-rays and gamma rays.
• ⚖️ International guidelines ensure that mobile phones are designed and operated below specific absorption rate (SAR) levels, which measure the amount of heat absorbed by the body.
• 📲 SAR measures only the heat produced, not the total RF-EMF energy emitted by phones.
• 🏡 Electrical devices in homes emit RF-EMF signals, but it's the devices that transmit data using RF-EMF that are of more concern.
• ⚠️ The WHO's International Agency for Research on Cancer classified RF-EMF as possibly carcinogenic to humans, especially with prolonged exposure over 10 watts per meter square.
• 👶 Vulnerable groups like children, the elderly, and immunocompromised individuals can be more affected by RF-EMF radiation.
• 🛡 Some anti-radiation products, like certain stickers and baby beanies, can reduce RF exposure by reflecting radiation waves, but not all products are effective.

Q & A

What do anti-radiation stickers and devices claim to protect against?

Anti-radiation stickers and devices claim to protect against radiation exposure, specifically from radio frequency electromagnetic fields (RF-EMF) emitted by wireless devices like mobile phones.

What is RF-EMF and why is it a concern?

RF-EMF stands for Radio Frequency Electromagnetic Field, which is the type of non-ionizing radiation emitted by wireless devices. It's a concern because prolonged exposure to high levels of RF-EMF may potentially lead to health issues, including an increased risk of cancer according to some studies.

What is the Specific Absorption Rate (SAR) and why is it important?

The Specific Absorption Rate (SAR) is a measure of how much power a certain volume or mass of tissue can absorb from RF energy, which translates to the amount of heat that builds up over time. It's important because it helps to ensure that mobile phones and other devices are designed and operated below the international guidelines for safe levels of RF exposure.

What is the international safety limit for SAR?

The international safety limit for SAR is 1.6 watts per kilogram, as mentioned in the script, which is the maximum amount of RF energy absorption that is considered safe for human tissue over a certain period.

How does the radiation level compare between different mobile phones?

The script indicates that the radiation levels of different mobile phones can vary, but all tested models emitted between 26.4 milliwatts and 47 milliwatts per meter square, which is significantly below the safety limit of 10 watts per meter square.

What is the significance of the color red and green in the radiation measurement chamber?

In the radiation measurement chamber, the color red indicates a higher level of radiated power, while green signifies a lower level of radiated power.

How can one reduce RF exposure from mobile phones?

To reduce RF exposure, one can use speaker mode during calls, keep the phone away from the body when not in use, turn off the phone at night, and maintain a distance from the phone when it's in active use.

Do anti-radiation stickers and devices effectively block RF-EMF?

The effectiveness of anti-radiation stickers and devices varies. Some, like certain baby beanies containing metallic material, can reflect signals and reduce exposure, while others, like the tested sticker and bracelet, did not show any significant effect in the tests conducted in the script.

What is the role of distance in reducing RF exposure?

Distance plays a crucial role in reducing RF exposure. As the distance from the source of RF-EMF increases, the exposure level decreases significantly. This is demonstrated in the script where moving further from a transmitter greatly reduced the signal power received.

What steps have been taken in some countries to limit children's exposure to RF-EMF?

Some countries like Canada, Israel, and Belgium have taken steps to limit children's exposure to RF-EMF by prohibiting mobile phone advertising to young children below the age of 14, and in France, labels and cell phone cases come with warnings about radiation.

What is the current stance of the World Health Organization (WHO) on RF-EMF and its potential carcinogenicity?

The WHO's International Agency for Research on Cancer classified RF-EMF as possibly carcinogenic to humans (Group 2B), indicating that there could be some risk associated with long-term, high exposure.

Outlines

00:00

📱 Investigating RF EMF Protection Devices

The video script begins with an exploration of products claiming to protect against radiation exposure from wireless devices. Sales of these products in Singapore have increased significantly. The narrator aims to determine if these devices are effective and if there's a need to worry about radiation from everyday devices. The investigation starts with a street interview to gauge public awareness about radio frequency electromagnetic fields (RF EMF). The narrator finds that many people are unaware of RF EMF and the warnings on their phones. The script introduces Professor Pay Yi Young, an expert who explains RF exposure, emphasizing that it is non-ionizing and less harmful compared to ionizing radiation like X-rays. The Specific Absorption Rate (SAR) is highlighted as a safety measure for RF exposure, with a safe limit of 1.6 watts per kilogram.

05:00

🔬 Testing Mobile Phone Radiation

The second paragraph details an experiment to measure the radiation emitted by the latest mobile phones. Professor Pay Yi Young assists in testing five different phones inside a shielded chamber to ensure accurate measurements. The test involves calling each phone to activate it and observing the radiated power, indicated by color changes on a screen. The script then shifts to discuss the radiation emitted by various home electronic devices, emphasizing that devices using RF EMF to transmit data, like smartphones and routers, are the primary concern. The World Health Organization's International Agency for Research on Cancer classified RF EMF as possibly carcinogenic, with exposure over 10 watts per meter square being potentially harmful. The script introduces a home visit by an RF expert to assess radiation risks, using a spectrum analyzer to measure emissions from a Wi-Fi router, which are found to be significantly below safety limits.

10:01

🏠 Assessing Home Radiation Safety

In this section, the script discusses the safety of radiation levels in the home. The expert, Professor Venkat, uses a spectrum analyzer to measure radiation from various devices and explains that the levels are well below the safety threshold. The script emphasizes the importance of distance in reducing radiation exposure, with a demonstration showing a significant drop in signal strength as distance from a transmitter increases. The narrator also considers the safety of carrying a phone in a pocket, with the expert noting that while phones operate within safety guidelines, using speaker mode or other methods to increase distance can further reduce exposure.

15:02

🌐 Global Concerns Over RF EMF

The fourth paragraph introduces Dr. Devra Davis, an advocate for greater transparency regarding RF EMF radiation. She argues that current safety limits are outdated and not protective of human health, citing studies that link long-term phone use to an increased risk of brain tumors. Dr. Davis emphasizes that the elderly, those with pre-existing conditions, and children are particularly vulnerable to RF EMF. The script mentions that some countries have taken steps to limit children's exposure to mobile phones and that the WHO's limit of 10 watts per meter square is considered outdated. Dr. Davis calls for a review of these limits.

20:04

🛡 Testing Anti-Radiation Products

The final paragraph reveals the results of tests on the radiation emitted by popular phone models, all of which are well below the safety limit. The narrator then tests various anti-radiation products, including stickers, a maternity belly band, and a baby beanie. The tests show that some products, particularly those containing metallic materials, can reduce RF exposure by reflecting radiation waves. However, not all products are effective, leading the narrator to conclude that while devices meet safety guidelines, it's still advisable to limit exposure and use hands-free kits or reduce phone usage to minimize potential risks.

Keywords

💡Anti-radiation stickers and tapes

These are products marketed to protect users from radiation exposure. In the video, they are mentioned as items whose sales have increased significantly in Singapore over the past five years. They are part of the narrative exploring the public's concern about radiation from electronic devices and the efficacy of such products.

💡Radio frequency electromagnetic field (RF EMF)

RF EMF refers to the type of electromagnetic radiation emitted by wireless devices, such as mobile phones. The video delves into public awareness of RF EMF and investigates whether these emissions are harmful. The concept is central to understanding the video's theme of radiation safety and the need for protective measures.

💡Specific absorption rate (SAR)

SAR is a measure of the amount of RF energy absorbed by the body when in contact with a device. The video discusses SAR as a regulatory standard, with a limit of 1.6 watts per kilogram, indicating the level at which a device is considered safe for human use. It is used to illustrate how devices are tested for safety.

💡Ionizing and non-ionizing radiation

Ionizing radiation has enough energy to remove tightly bound electrons, thus causing damage to cells, while non-ionizing radiation does not. In the video, RF EMF is described as non-ionizing, suggesting it is less harmful than ionizing radiation like X-rays and gamma rays. This distinction is crucial for understanding the potential risks associated with RF EMF.

💡Watts per meter square

This is a unit of measurement for the intensity of RF EMF radiation. The video mentions that the WHO's safety limit is 10 watts per meter square. This term is used to gauge the potential risk of RF EMF radiation from various devices in the home environment.

💡Radiation exposure

Radiation exposure refers to the measurement of how much radiation a person receives over time. The video investigates the levels of radiation emitted by mobile phones and other devices, as well as the potential health risks associated with prolonged exposure. It is a central theme in the video, driving the investigation and discussion.

💡Electromagnetic spectrum

The electromagnetic spectrum encompasses all possible frequencies of electromagnetic radiation. The video explains that RF EMF is part of this spectrum, specifically the radio frequency portion, which is non-ionizing. Understanding the electromagnetic spectrum helps to contextualize the nature of RF EMF.

💡Smart devices

Smart devices include smartphones, smartwatches, laptops, and other gadgets that use RF EMF to transmit data. The video discusses the radiation emitted by these devices and the potential risks they pose in a home setting. Smart devices are highlighted as sources of RF EMF that viewers should be aware of.

💡Safety guidelines

Safety guidelines refer to the established limits for RF EMF exposure set by health authorities to protect human health. The video mentions that devices must be designed and operated below these reference levels. These guidelines are critical for understanding what levels of RF EMF are considered safe.

💡Anti-radiation devices

These are products that claim to shield users from RF EMF radiation. The video tests the effectiveness of various anti-radiation devices, revealing that not all of them are effective. This keyword is significant as it ties into the video's exploration of consumer protection and the validity of such products.

💡Distance

The video emphasizes the importance of distance in reducing RF EMF exposure. By increasing the distance between a person and the source of radiation, the exposure level decreases. This simple measure is recommended as a way to mitigate potential risks, underscoring the practical advice offered in the video.

Highlights

Anti-radiation stickers and devices claim to protect from radiation exposure, with sales in Singapore quadrupling over five years.

Devices aim to protect from radio frequency electromagnetic fields (RF-EMF) emitted by wireless devices like mobile phones.

Investigation into whether these devices actually protect and if there's a need to worry about radiation exposure.

Many people are unaware of RF-EMF and the warnings about radiation in their phone's settings.

RF stands for radio frequency, part of the electromagnetic spectrum, and is non-ionizing, meaning it doesn't damage cells.

International guidelines ensure phones operate below certain radiation levels, measured by the Specific Absorption Rate (SAR).

SAR measures heat produced by radio frequency energy, not the amount of RF-EMF energy emitted.

Testing five latest mobile phones for radiation emissions in a shielded chamber.

All electrical devices emit RF-EMF signals, but it's the devices transmitting data that pose potential concerns.

WHO's IARC defined RF-EMF as possibly carcinogenic, with exposure over 10 watts per meter square potentially harmful.

Home assessment reveals radiation levels well below safety standards, with distance from devices key to reducing exposure.

Dr. Devra Davis argues that current safety limits are outdated and do not protect human health.

Studies suggest a doubled risk of developing a rare brain tumor from regular phone use over 10 years.

Children and the elderly are more vulnerable to RF-EMF radiation.

Some countries have taken steps to protect vulnerable groups, such as prohibiting phone advertising to children.

Lab tests show popular phone models emit radiation well below safety limits.

Anti-radiation products are tested, with mixed results on their effectiveness.

Recommendations to limit exposure include using speaker mode, keeping devices away from the body, and reducing phone usage time.

Transcripts

so

[Music]

anti-radiation stickers and tapes

and devices like these

they all claim to protect us from

radiation exposure

according to industry sources sales of

these products in singapore have

quadrupled over the past five years

[Music]

you know a lot of these devices are

meant to protect us from what is called

the radio frequency electromagnetic

field or rf emf now simply put is

radiation that is emitted from our

wireless devices like a mobile phone so

in this episode i'm going to investigate

if such devices really do protect us and

if there is a need to be worried about

the radiation exposure

all around us

to start off my investigation i'm

hitting the streets to find out how many

of us actually know what radio frequency

electromagnetic field is

you might not realize it but there is a

section of your phone titled rf exposure

it contains quite a fair bit of

information that tells you about

radiation from your phone

i printed out the information and it's a

lot of fine print to read can i ask you

a few questions about your phone you

have two phones have you ever thought

about a radiation that comes from your

phone uh yeah sometimes

not really

is it deadly is it deadly ah that's a

good question can i show you something

can you take out your phones have you

ever seen the warnings on your phone

which part of the settings in general

legal and regular trees no i say no i

don't and then you see rf exposure have

you ever seen this before

oh no

have you ever looked at this page no it

didn't yeah yeah nobody does right

this basically warns you that

the phone is giving off some radiation

they also suggest using a free option do

any of you ever do that yeah speakers

right yeah i always do that you see uh

year of the year piece yeah

have you been worried enough to ever buy

any of these you know like uh

anti-radiation sticker or you have these

bracelets bought one of them with my

kids

so as i discovered many people are just

like me not quite knowing what rf emf

really is all about so i'm off to meet

someone who can tell me more

hello prof

hi thanks for meeting up you know on our

phones there's a section that talks

about how you need to be careful about

certain radiation frequencies so i have

to ask you what exactly is rf exposure

rf stands for radio frequency and it's

part of the electromagnetic spectrum and

electromagnetic energy is all around us

okay and phones and electronic devices

operate in that part of the spectrum

called radio frequency the radio

frequency part of the spectrum is

non-ionizing in nature they don't have

so much energy to cause any damage to

the cells so light is also part of an

electromagnetic energy spectrum light

stands right in between the ionizing and

non-ionizing spectrums so anything

beyond the light spectrum is going to be

ionizing in nature x-rays and gamma rays

so would the rf exposure for my phone

then be ionizing or non-ionizing it

operates in a lower frequency and it's

non-ionizing in nature yet they have the

ability to let's say heat up the body

for example if that particular device is

held close to our body which in this

case is a cell phone but there are

international guidelines where uh these

phones are to be designed and operated

below those reference levels guidelines

have been given to in terms of certain

measures called the specific absorption

rate yeah what does that actually mean

specific absorption rate is a measure of

how much power a certain volume or mass

of tissue is able to absorb

and that translates directly to amount

of heat that builds up over time okay so

there are regulations as to what is a

safe limit here it says the limit is 1.6

watts per kilogram that's right so as

long as any phone manufacturer who has

done a device is tested and proven that

it is less than 1.6 watts it's only then

he will be able to put it out in

commercial market 1.6 watts per kilogram

the sar or specific absorption rate

measures only the heat produced when

radio frequency energy hits our body

it doesn't measure the amount of radio

frequency electromagnetic field or rf

emf energy emitted

which is what the anti-radiation

products claimed to protect us against

i tried looking through my phone but

beyond the sar or specific absorption

rate i couldn't find any information on

rf emf levels our phones emit

so i'm taking things into my own hands

i'm meeting up with professor pay yi

young her research and wireless

applications can help me gauge how much

radiation our phones emit

i'm testing five of the latest mobile

phones in the market

hello professor hello so i need your

help today because you know how we're

carrying our phones with us and our

bodies the whole time and i know these

guys emit radiation but i'm wondering

how much radiation do different phones

give off are you able to help me measure

that yeah sure we can measure it inside

the chamber here okay

this chamber is completely shielded from

other energy sources so whatever is

measured inside will come only from the

phones

we're placing all the phones inside one

at a time

to measure the radiation emitted when

the phone is active we'll be making a

call to the phone

we see that when the color is red it

means that more radiated power the color

is green it means less radiated power so

if we look at the pattern here

it tells us that the radiation is

stronger over here right so it's kind of

the top left corner that seems to be the

area which has the most

radiation yes and the bottom also

radiates quite a lot of power over here

you see the color is more

right red

the test for all the phones will take

three to five days

meanwhile i'm turning my investigation

to our homes

it's not just our mobile devices all

electrical devices emit rf emf signals

[Music]

but as devices that use rf emf to

transmit signals that we should be most

worried about things like your your

smart watch bluetooth headphones laptop

tablet

wi-fi router smart tv the list goes on

and most of us have all these things at

home it's got me thinking i wonder just

how exposed my family and i could be to

radiation

i'm about to find out

i've learned that all electrical devices

emit radio frequency electromagnetic

field waves or rf emf but it's the ones

using rf emf to transmit data that we

should really be worried about

devices like our phones laptops and

routers

the radiation emitted from these devices

are measured in watts per meter square

so in 2011 the who's international

agency for research on cancer defined rf

emf as possibly carcinogenic to humans

meaning it may cause cancer to us now

this happens when there is exposure of

more than 10 watts per meter square so

i'm thinking about all the wireless

devices around my home and i'm getting a

little bit concerned i'm meeting up with

radio frequency expert professor venkat

again this time at my house to assess

the radiation risk to my family so i've

been worried about you know radiation in

my home and wondering if i can you know

figure out just how safe it is yes uh we

can do that steve i brought this

instrument called as the spectrum

analyzer this instrument allows you not

only to see the power levels but also to

see the different frequencies that are

around in your house

okay great let me bring you to my

favorite spot i want to see how safe

that is sure

have a seat please yeah uh i would need

your help to carry this probe and we

could move it closer to the router to

see what kind of signals yes you're

doing good

so what this instrument is now measuring

is the emissions from that router and

since it's a wi-fi router we can see two

significant peaks appearing at 2.4

gigahertz band as well as the 5

gigahertz band which is licensed for

wi-fi use those are the strong signals

but how much is it giving off in terms

of radiation yes the guidelines is 10

watts per meter square we see the red

line on top here that is what it means

now

every line below that is 10 times lower

than that so if the peak value that you

see here for the 2.4 gigahertz is 7.1

milliwatts per meter square right and

that is like a factor of at least 1000

times lower than guidelines of 10 watts

per meter square

okay so in other words what you're

saying is where the red line if i cross

that that's not good all the emissions

across the different frequencies if they

add up together and crosses the total

power of 10 watts per meter square then

it's dangerous but in this case with

everything that we have now is 1000

times lower it's a thousand times lower

than that red line absolutely in this

measurement as a conservative estimate

we are doing a maximum value of how much

is its emitting it need not be emitting

that all the time it could be just a

pulse that appears and vanishes off

right so if you average out it could

even be less than that absolutely so can

we take a look at other places around

the house just to check that it's safe

too absolutely okay you could do that

yeah let's do that this way please yeah

thank you

let's see if we get any kind of a

reading

across measurements from my living room

workstation and study room still way

below the red line prof venkat found out

that the readings were at least 100

times below the safety standard

so it's good to know that the house is

actually really quite safe that's right

steve we have measured at various

locations and we are well below the

safety guidelines it makes me feel a lot

better absolutely and besides that as we

move away from a signal source the

signal strength is going to get even

more much weaker

and when it comes to radiation

protection distance is our friend really

yes and i have set up something for you

to show you that let's go and see that

okay sure let's go

so what we have set up here is a

transmitter that transmits at a certain

frequency of 2.8 gigahertz to avoid

other rf emf signals around us

influencing our experiment

proffvenken has set up a transmitter to

generate a radio signal that is not

taken up by any other devices around us

at 2.8 gigahertz this signal is at a

frequency that is much higher than the

typical wi-fi signals that our phones

receive from internet routers

so we are having the same probe that we

used in your house to see what is the

strength when it is up close to the

transmitter which is 50 centimeters away

and we see a value that is hovering

around 100 micro watts per meter square

that's right if we wait to double the

distance say from 50 centimeters if we

move to a distance of one meter

then we see that almost by a factor of

four it goes down to poor around 25

micro watts per meter square wow that's

a big difference that's right in fact

when we double the distance the power

density goes down by a factor of four

theoretically

so if we move back

further time that's right let's say we

move from one meter to two meter we see

that it goes as low as even below 10 uh

microwatts per meter square wow okay so

really distance is key here absolutely

what about

all of us who carry our phones in our

pockets and i've got mine here in my

back pocket that's definitely no

distance at all how safe is that yeah

when your phone is in the idle mode it

is typically doing some kind of

signaling and that is going to be in a

very low power mode when you are in an

active call that's when the phone

transmits back to the base station and

it's going to be operating in a higher

power level yet below the safety

guidelines

and and sometimes on the phone after

about you know five to eight minutes it

starts getting really warm is that a

sign that also more radiation is being

emitted uh not necessarily the battery

also emits heat and there are other

factors that can cause the phone to get

heated up as well not necessarily due to

art of radiation okay and if you're

really concerned about a radiation

exposure we can see from this

demonstration that distance is your

friend so you can help keep the phone

further away maybe have it in a

hands-free mode so that you can use it

with your headphones it's a relief to

know that i'm relatively safe from

radiation exposure

and that distancing myself from my

electronic devices will help to reduce

the exposure further but as i dig more

into this issue i found a professor who

claims that i am not as safe as i think

i am

there are a lot of important questions

to be asked about mobile phone radiation

today without any doubt

but the reality is we're not asking

those questions

dr devra davis has been fighting for

greater transparency on rf emf radiation

for 13 years

i'm making a video called to wyoming

where she's based at let me be clear

the limits that we have now that are 25

years old are not protective of human

health now that's obviously out of date

the latest evidence indicates that cell

phone and wireless radiation is a human

carcinogen studies have found that

people who use phones regularly for 10

years or more

have a doubled or greater risk of

developing rare malignant tumor of the

brain called glioblastoma

according to dr davis this is the risk

you're exposed to as long as you're on

the phone for 17 minutes or more a day

every day for 10 years or about 1 000

hours in your lifetime

who's most vulnerable the ones that are

most vulnerable are the elderly and

those with pre-existing morbidities

whether it's diabetes

or immunocompromised and we know that

the younger a person is the more

vulnerable they will be a child's head

has a thinner skull a child's skull can

absorb 10 times more radiation i have

seen so many toddlers with phones in

their mouth with phones held close

bodies and that is just inappropriate

that's why our group environmental

health trust has been working so

diligently to get information out to

schools parents and teachers so they'll

understand

tablets belong on tables

ideally they should be wired you can

wire your connections to most of these

things

and they don't need to be on 24 7

in the routers what do you think you

know should be changed well in israel

and in france and in belgium and a lot

of european countries phones come

with information about the radiation

right on the phone that i think is

absolutely essential and frankly it

should not be used much by children for

now the wa joe's limit is 10 watts per

meter square

when i asked dr davis what would be a

more accurate limit she didn't have

specifics

what she wanted was for the who to

review their current limits

meanwhile some countries have taken

steps to protect children pregnant women

and immunocompromised individuals

for example canada israel and belgium

all have lost prohibiting mobile phone

advertising to young children below the

age of 14.

in france labels and cell phone cases

come with warnings about radiation as

well as instructions to keep the device

away from the abdomen of pregnant women

earlier i sent five of the most popular

phone models to a lab to find out how

much radiation they missed

i'm about to find out the results

i'll also reveal if any of these

anti-radiation devices actually work

oh that's some effect

so a few days ago i sent some of our

most popular phone models to find out

how much radiation each one emits the

safety limit adopted by the who is 10

watts per meter square and while

authorities ensure that phones like this

must meet rf radiation safety

requirements i do still wonder what kind

of radiation we're looking at on each of

these devices

the results are in

the good news is that all five phones

measure between 26.4 milliwatts and 47

milliwatts

one thousand milliwatts make up one watt

which means that these numbers are at

least a hundred times below the safety

limit

all of them are within the safety limit

so it shouldn't be a concern

but for people who are still concerned

about

radiation they can reduce the amount of

time they're using their phone maybe

shut it off at night

and use a speaker mode while making a

call this increase the distance between

you and your phone

and then all these are simple measures

which can reduce rf

exposure

still some of us may want to play it

extra safe which is why i brought along

these

we're going to be testing a variety of

anti-radiation products

from the cheapest stickers which sell

for just two singapore dollars to

products that protect the most

vulnerable kids and pregnant women

a maternity belly band for fourteen

dollars

and a beanie that is meant to protect

the heads of babies from radiation for

twenty dollars

there's also this bracelet that claims

to protect you from all rf emfs

generated by electricity it costs 68

these products are according to more

than four retailers i contacted the best

selling ones right now okay so over here

we have a pair of transmitter and

receiver we are going to put different

products in between and we are going to

see whether the signal received here

will be blocked or not

now the value is around

-24 db so this is the baseline let's try

the all-powerful sticker okay so let's

put the sticker here

so the value is around the same okay no

difference what does that mean it

doesn't affect the signal quality over

here it doesn't work

next let's look at this bracelet okay

so it was around 25 to begin with and

again no change no change

okay so this doesn't work too next this

beanie which they say for babies to wear

to help keep their heads protected

oh that's some effect so went down from

-25 to -31 is that a significant drop

actually the signal power received here

drops and i think as we can see from the

label of this baby cap there's some

metallic material that reflected the

signal so it works in a similar way as

this metal plate if i put it here

you see the signal power drops

significantly

okay so essentially it's putting a metal

in between yes the signal and you yes

correct

anti-radiation devices usually feature a

metal piece that acts as a shield to

reflect radiation waves

it works in reducing the rf exposure but

i have to say this is the extra

precaution that you can have

to further reduce the rf radiation okay

and now we have this one it's a wrap

it's called belly armor okay so first of

all let's set up the baseline for

measuring this okay now it's -25 so

let's put this thing here

and the reading is still around the same

yeah no significant difference at all it

doesn't offer any kind of protection so

it's belly armor but it's not very good

so back to our last one this little cube

here which they say if you put it in the

proximity of where the radiation is it's

just going to absorb all the radiation

let's go and test it out okay

[Music]

so this shows that this product here is

not affected to block away the signal

so should i worry about radiation

exposure from wireless devices around me

well despite what this says i've learned

that we are relatively safe from them

all these devices are designed to meet

international safety guidelines but to

be extra safe i think i'm still going to

limit my exposure when i can

and as far as these anti-radiation

devices are concerned well not all of

them do their job so the best thing i

can do is to keep a distance from active

devices

like by using a hands-free kit when i'm

making a call or simply limiting the

time spent on my phone

hello

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