What is Measurement? | RESEARCH I

Summary

This educational video script introduces the fundamental science process skill of measurement, emphasizing its importance in collecting, comparing, and interpreting data. It explains the concepts of accuracy and precision, and highlights the metric system's role in scientific communication. The script provides an overview of various traditional measuring tools, including beakers, graduated cylinders, vernier calipers, micrometers, and balances, detailing their specific uses and levels of accuracy. It also mentions modern tools like the NDIR sensor for gas measurement, offering a comprehensive guide for future researchers and students in scientific investigation.

Takeaways

• 🔬 Measurement is a fundamental science process skill that is essential for collecting, comparing, and interpreting data in scientific research.
• 📏 The metric system is the standard for scientific measurements, helping students understand and communicate within the scientific world.
• 📐 Accuracy and precision are critical in measurements; accuracy refers to the closeness of a measurement to the true value, while precision means the exactness of the measurement.
• 🧪 Scientists and engineers use precise tools for measurements to ensure the quality of their work, similar to how architects use exact lengths for building structures.
• 📏 Tools like beakers, erlenmeyer flasks, and graduated cylinders are used for measuring the volume of substances in a laboratory.
• 🔬 Graduated cylinders offer a higher degree of accuracy than beakers and flasks, with precision within one percent.
• 🧪 Burets and pipettes are highly accurate glassware for measuring volumes, with burets being particularly precise within 0.01 ml.
• 📏 Tape measures, vernier calipers, and micrometer calipers are used for measuring length, width, and height with high precision.
• ⚖ Analytical balances, centigram balances, and triple beam balances are tools for measuring mass with varying levels of sensitivity and accuracy.
• 🌡️ Devices such as a geometer, pressure gauge, and NDIR sensors are used for measuring gas volumes and detecting carbon dioxide concentrations.
• 🔍 Choosing the appropriate measuring tool is crucial for obtaining precise and accurate measurements in scientific experiments.

Q & A

What is the second basic science process skill discussed in the script?

The second basic science process skill discussed in the script is measurement.

Why is measurement important in the scientific process?

Measurement is important in the scientific process because it helps in collecting, comparing, and interpreting data, allowing for classification and communication with others.

What does the script suggest should be used to help students understand the scientific world?

The script suggests that the metric system should be used to help students understand the scientific world.

What is the difference between accuracy and precision in the context of measurement?

Accuracy refers to the closeness of a measurement to the true value of what is being measured, while precision means the exact amount of measurement, indicating that it is neither more nor less, but exactly what it should be.

What are some examples of traditional tools used for measuring volume in scientific investigation?

Examples of traditional tools used for measuring volume include beakers, Erlenmeyer flasks, graduated cylinders, burets, pipettes, and droppers.

Why are beakers and Erlenmeyer flasks not ideal for precise volume measurements?

Beakers and Erlenmeyer flasks are not ideal for precise volume measurements because they offer crude readings and often do not have graduated markings on their sides, making them more suitable as containers for substances during experiments.

What is a graduated cylinder and how is its accuracy compared to beakers and flasks?

A graduated cylinder is a tall, narrow vessel used for measuring the volume of liquids. Its degree of accuracy is marginally higher than that of beakers and flasks, typically within one percent.

What is a buret and how accurate is it in measuring volumes?

A buret is a highly accurate glassware used for measuring volumes. It comes in different sizes, such as 10 ml, 50 ml, and 100 ml, with a precision within 0.01 ml.

What are some tools used for measuring length, width, and height in a laboratory?

Some tools used for measuring length, width, and height in a laboratory include tape measures, vernier calipers, micrometer calipers, rulers, and meter sticks.

How does a micrometer caliper differ from a vernier caliper in terms of accuracy and use?

A micrometer caliper integrates a calibrated screw and is commonly used for accurate component measurement in mechanical engineering and machining. It is more precise than a vernier caliper, which is a precision instrument used for measuring internal and external distances and reducing human estimation error.

What are some laboratory tools used for measuring mass, and how do they differ in sensitivity and use?

Laboratory tools used for measuring mass include analytical balances, centigram balances, platform balances, and triple beam balances. Analytical balances are highly sensitive and can measure up to 10,000 or even 100,000 grams, while centigram balances weigh objects to 0.01 grams, platform balances are simple machines that do not require power, and triple beam balances are commonly used in school laboratories.

What is an audimeter and how is it used in a laboratory?

An audimeter, also known as a gasometer, is a laboratory device that measures the change in volume of a gas mixture following a physical or chemical change.

What is the purpose of an NDIR sensor in a gaseous environment?

An NDIR (Non-Dispersive Infrared) sensor is used to detect carbon dioxide in a gaseous environment by its characteristic absorption. It consists of an infrared source, a light tube, an interference or wavelength filter, and an infrared detector, and is often used for measuring carbon dioxide levels.

What is a carbon dioxide sensor module based on NDIR technology, and where is it commonly used?

A carbon dioxide sensor module based on NDIR technology, such as the CM110-6S, can detect the concentration of carbon dioxide in indoor air with high accuracy and stability. It is commonly used in ventilation systems, air purifiers, air conditioners, and IAQ (Indoor Air Quality) monitors.

Outlines

00:00

🔬 Fundamentals of Scientific Measurement

This paragraph introduces the importance of accurate and precise measurement in scientific research, emphasizing that it is a fundamental component of good science. It explains the difference between accuracy and precision, with accuracy being the closeness to the true value and precision being the exact amount of measurement. The paragraph also discusses the metric system as a tool for understanding the scientific world and the necessity of using appropriate tools for measuring different properties of objects and events, such as length, area, volume, and weight.

05:00

📏 Exploring Traditional Measuring Tools

This section delves into the various traditional tools used for scientific measurements. It covers tools for measuring volume, such as beakers, erlenmeyer flasks, graduated cylinders, burets, pipettes, and droppers. The paragraph also discusses the limitations of these tools, explaining that certain tools are not interchangeable for different types of measurements. It then moves on to tools for measuring length, including tape measures, vernier calipers, micrometer calipers, rulers, and meter sticks, highlighting their specific uses and advantages in different scenarios.

10:00

⚖️ Advanced Tools for Mass and Gas Measurement

The final paragraph focuses on advanced laboratory tools for measuring mass and gas. It describes analytical balances, centigram balances, platform balances, and triple beam balances, each with their unique sensitivity and accuracy levels suitable for different measurement needs. The paragraph also introduces tools for gas measurement, such as the audimeter for volume changes, pressure gauges for fluid conditions, and NDIR sensors for detecting carbon dioxide. The summary concludes with the mention of a carbon dioxide sensor module, emphasizing its high accuracy and stability for indoor air quality monitoring.

Keywords

💡Measurement

Measurement is the process of assigning a numerical value to an attribute of an object or event, which is essential in the scientific method for collecting, comparing, and interpreting data. In the video, measurement is highlighted as a fundamental skill in scientific investigation, with the metric system being emphasized for standardization in scientific communication.

💡Precision

Precision refers to the exactness and consistency of measurements, ensuring that the results are neither more nor less than the true value. The video script mentions precision in the context of using appropriate tools for accurate measurements, which is crucial for reliable scientific findings.

💡Accuracy

Accuracy is the closeness of a measured value to the true value of the quantity being measured. The script discusses accuracy in conjunction with precision, emphasizing the importance of these concepts for obtaining reliable and valid scientific data.

💡Metric System

The metric system is a decimal system of measurement that is widely used in science and everyday life. The video script underlines its importance for students to understand and use in scientific experiments, as it provides a standardized method for measuring different quantities.

💡Beaker

A beaker is a laboratory glassware used for mixing, stirring, and heating liquids. In the script, beakers are mentioned as containers for holding substances during experiments but are not suitable for precise volume measurements due to their lack of graduated markings.

💡Graduated Cylinder

A graduated cylinder is a piece of laboratory equipment used for measuring the volume of liquids with a higher degree of accuracy than beakers. The script describes it as a tall, narrow vessel with markings that allow for precise volume measurements.

💡Buret

A buret is a highly accurate piece of glassware used for measuring and dispensing small volumes of liquid. The script mentions burets as having a precision within 0.01 ml, making them ideal for precise volume measurements in scientific experiments.

💡Pipette

A pipette is a laboratory tool used for transferring small, measured volumes of liquid. The script describes pipettes as long, narrow tubes with high accuracy, which can measure liquids within a range of 0.02 ml.

💡Dropper

A dropper is a device used to dispense small quantities of liquid, often used in laboratories and for medical purposes such as administering eye drops. The script refers to droppers as another tool for precise liquid measurement.

💡Tape Measure

A tape measure is a flexible ruler used to measure length, width, or height. The script mentions tape measures as common tools for linear dimension measurements, consisting of a ribbon with linear markings.

💡Micrometer Caliper

A micrometer caliper is a precision instrument used for accurately measuring small distances, often used in mechanical engineering and machining. The script describes it as integrating a calibrated screw for high-accuracy component measurements.

💡Analytical Balance

An analytical balance is a highly sensitive piece of laboratory equipment used for measuring mass with great precision, often up to the level of micrograms or even nano grams. The script mentions analytical balances as instruments that can measure very small masses with high accuracy.

💡Platform Balance

A platform balance is a simple machine used for measuring mass, consisting of two platforms balanced on a cross arm. The script describes platform balances as convenient tools that do not require power to operate and are commonly used for weighing objects.

💡Triple Beam Balance

A triple beam balance is a type of scale that uses counterweights to balance the sample on a three-pan beam. The script mentions this balance as a common tool in school laboratories for measuring mass.

💡Geometer

A geometer is a laboratory device used to measure changes in the volume of a gas mixture following a physical or chemical change. The script refers to it as an instrument for gas volume measurement in scientific experiments.

💡NDiR Sensor

NDiR stands for non-dispersive infrared, and an NDiR sensor is a spectroscopic sensor that detects carbon dioxide in a gaseous environment by its characteristic absorption. The script describes NDiR sensors as tools used for measuring carbon dioxide levels with high accuracy.

Highlights

Importance of accurate and precise measurement in scientific processes and its role in data collection, comparison, and interpretation.

Introduction to the second basic science process skill: Measurement.

Explanation of the metric system and its use in scientific education.

Measurement as a critical component in conducting experiments and its significance in quantitative data.

Definition and distinction between accuracy and precision in measurements.

Direct and indirect comparison methods in measuring the properties of objects and events.

Development of skills such as ordering properties and comparing quantities using standard units.

Importance of selecting appropriate tools for precise and accurate measurements in scientific investigation.

Different types of measuring tools for volume, including beakers, erlenmeyer flasks, graduated cylinders, burets, pipettes, and droppers.

Use of tape measures, vernier calipers, micrometer calipers, rulers, and meter sticks for measuring length, width, and height.

Role of analytical balances, centigram balances, platform balances, and triple beam balances in measuring mass.

Introduction to laboratory tools for measuring gas, including the audimeter, pressure gauge, and NDIR sensors.

Explanation of the NDIR technology and its application in detecting carbon dioxide concentration.

Description of the carbon dioxide sensor module CM110-6S for indoor air quality monitoring.

Upcoming discussion on the differences between micrometer calipers and vernier calipers in the next vlog.

Encouragement for viewers to subscribe, like, and hit the notification bell for more research updates.

Transcripts

[Music]

scientists never just grab

a handful of chemicals and then toss

them together

architects and engineers never just grab

a certain length of object just to make

or just to build houses and buildings

accurate precise measurement is a

fundamental component of a good science

magandang aro future researchers this is

me again featured in me

i'm kasama mo at gaga bay say yo yo

blizzard's journey

welcome back to our youtube channel

don't forget to subscribe

like and hit the notification bell for

more updates in our subject in

research we are now in our week 3 module

t in research

1. last time we discuss about the most

fundamental

basic process skill which is observation

from that last one

you were able to explain the importance

of observation

based on the empirical nature of science

and you were able

to demonstrate the skills in observing

in a given

event or object this lesson you should

be able to use the most appropriate

tools in measuring objects

in this lesson vlog we're going to talk

about the traditional

tools in measuring and inducing in

scientific

investigation but before that let us

define first

the second basic science process skill

which is

measurement do you have any idea what

measurement

is what is measurement measuring is

important in collecting

comparing and interpreting data

it helps us classify and communicate

with others and always remember that we

have the metric system which is the

metric system

should be used to help students

understand

the scientific world

[Music]

measuring is critical in the collection

comparison and analysis of data

it allows us to identify and interact

with others

the metric system should be used to help

understand the world of science

measuring is one of the science basic

process skills essential in doing an

experiment

and it is considered as quantitative

data

[Music]

scientists never just grab a handful of

chemicals and then

toss them together architects and

engineers

never just grab a certain length of

object

just to make or just to build houses and

buildings accurate precise measurement

is a fundamental component

of a good science accurate precise

measurement is a fundamental component

of a good science

we have these two term precise and

accuracy which

we're going to use in this lesson in

measurement

when we say accuracy it means this is

the closeness of measurement to the true

value

of what is being measured but when we

say precise

it means that this is the exact

amount of measurement meaning to say

when we say precise

it is neither more or less

but exactly

[Music]

measuring the properties of objects and

events may be accomplished by direct

comparison

or by indirect comparison with arbitrary

unions

which may be standardized for

communication purposes

by doing such a measurement learners may

be able to develop skills such as

order properties of objects

by means of measuring devices without

regard

to quantitative units compare the

quantities

of arbitrary units such as length

area volume

and weight another thing is

use standard units for measurements

select one system of units for all

related measurements

identify measurable physical quantities

and convert from one system units to

another

[Music]

in doing such experiment it is very

important

that we know what appropriate tools

should be used

in measuring it is very important for us

to have a precise

and accurate measurement there is

appropriate laboratory equipment for

every measurement

just like the beaker we use beaker to

measure the volume

of a certain substance but we cannot use

the beaker to measure the length of a

certain object

we also have the ruler to measure the

length of a certain object but we cannot

use the ruler

to measure the volume of a certain

substance

we also have the triple beam balance to

measure the weight of a certain solid

material

on solid object but we cannot use the

triple beam balance

just to measure the volume of your milk

[Music]

now let us have measuring tools

for measuring the volume

we have beakers and erlenmeyer flask

beakers and erlenmeyer flask the vessels

on this list may be bigger than others

but they offer nothing but crude

readings in addition

beakers and flasks often do not even

have markings graduated on their sides

therefore they are only used as

containers only so as you can see

we can use this as container and storage

of

substances during experiment

we also have graduated cylinder

[Music]

graduated cylinder these are tall narrow

vessels

a graduated cylinder's degree of

accuracy is marginally higher than the

beakers and flask

within one percent they weigh liquids

next we have the buret bireth is one of

the most

accurate glassware for measuring volumes

it is highly accurate this type of

volumetric flask or glassware

is found in three different sizes it can

be 10

ml 50ml and 100 ml

their precision is within 0.01

ml we also have the pipette

pipette is a kind of volumetric

glassware that is designed

as very long and narrow glass tubes

the level of its accuracy is highly

accurate

their accuracy depends in part of their

height

which is between 12 to 24 inches in

length

the pipette graduations that measure

liquids within a range of

0.02 ml

next we also have the dropper dropper is

a device

used to transfer small quantities of

liquids

sometimes it is also known as the

pasture pipette

also known as the dropper okay and they

are used in a laboratory and also to

dispense small amounts of liquid

medicines

a very common use was to dispense eye

drops into the eye

so this is the dropper

now let's proceed with uh

laboratory tools for measuring the

length

width and height number one we have the

tape measure

tape measure is flexible ruler

used to measure size or distance

a tape measure or measuring tape is

consists of a ribbon of cloth

plastic fiberglass or metal strip with

linear measurement markings

it is also common measuring tool

this is the tape measure next we also

have this vernier caliper

a vernier caliper is a precision

instrument

that is highly accurate in measuring

internal and external distances

it is a measuring device used to

precisely measure linear dimensions

it is very useful tool to use when

measuring the diameter of round objects

like cylinders

and used to reduce human estimation

error next we also have this micrometer

caliper

a micrometer caliper is a tool that

integrates a calibrated screw

commonly used for accurate component

measurement in mechanical engineering

and machining

as well as most mechanical trades along

with other metrological instruments such

as dial

vernier and automated calipers so this

is a micrometer caliper

we also have the ruler ruler is a device

used in geometry and technical drawing

as well as engineering and construction

industries

to measure distances or draw straight

lines

so this is very common the most common

instrument that can be used in measuring

the length or weed

of a certain object next is the meter

stick a meter stick is either a straight

edge

or foldable ruler used to measure length

and is commonly especially common in the

construction

industry so this is a meter stick which

uh usually have the length of one meter

next let's now proceed with um

laboratory tools for measuring the mass

we have the analytical balance

analytical balance is common piece of

scientific laboratory equipment

this is highly sensitive instruments

that can measure

up to 10 000 or even

100 thousands of gram

[Music]

meaning to say this is very accurate

next we have the centigram balance a

centigram balance

uh somehow look like the analytical

balance

but when we say centigram balance it is

this is a metric unit equal to one tenth

of a gram

the scale will weigh objects to 0.01

grams at the nearest

it increases effectiveness when

calculating an object's

weight next we also have

the platform balance a platform balance

has two platforms balanced on or

suspended from cross arm and weights

are placed on one platform before the

item is weighted in the balance

platform balances are simple machines

and they are convenient because they do

not require any power to work

next we also have the triple beam

balance a triple beam balance is a kind

of scale that uses counter weights to

counterbalance

the sample in the pan on a three rider

beam

this is a triple beam balance and this

is commonly used in

school laboratory

now let's proceed with laboratory tools

for measuring gas

so actually there are lots of measuring

tools that can measure the gas

but let us have this this is what we

call the

a geometer so geometer is a laboratory

device that measures the change in

volume

of a gas mixture following a physical or

chemical change

so this is the audimeter

next we also have this pressure gouge

it is an instrument for measuring the

condition of a fluid

liquid or gas that is specified by the

force

that the fluid would exert when at rest

on a unit area such as pounds per square

inch

or newtons per square centimeter

[Music]

and we also have this one are you

familiar with this this is what we call

the

ndir or

ndir sensors or the non-dispersive

infrared carbon dioxide sensors

so what is this

this ndir sensors are spectroscopic

sensors to detect carbon dioxide in a

gaseous environment

by its characteristic absorption

the key components are an infrared

source

a light tube an interference or

wavelength filter

and an infrared detector the gas is

pumped or diffuses

into the light tube and then the

electronics measure

the absorption of the characteristic

wavelength of light

ndir sensors are most often used for

measuring the carbon dioxide

[Music]

next we have the carbon dioxide sensor

or the cm110

6s it is a single beam ndir

carbon dioxide sensor module based on

non-dispersive

infrared or the ndir technology which

can detect

carbon dioxide concentration of indoor

air so with high accuracy high stability

small size and it is widely used for

ventilation system air purifier air

conditioner

iaq monitor and et cetera

discussion about the traditional

measuring tools stay tuned in our

channel because in our next lesson vlog

we're going to discuss about the

difference between

micrometer caliper and a vernier caliper

don't forget to subscribe like and hit

the notification bell for

more updates in research again this is

titrating may

and see you on our next vlog bye

[Music]

um