Bagian Mikroskop dan Fungsinya | Video Belajar IPA Kelas 7 SMP

Summary

This video explains the essential components of a microscope, focusing on the ocular lens, objective lens, and other key parts like the revolver, mirror, condenser, and diaphragm. The ocular lens magnifies the image, while the objective lens, located closer to the object, determines the level of magnification. The revolver adjusts the objective lens magnification. The mirror reflects light, and the condenser collects and focuses it. The diaphragm controls light intensity. The preparation table holds the specimen, and both macrometer and micrometer fine-tune the focus. The video provides a comprehensive guide to understanding each microscope part's function.

Takeaways

• 😀 The ocular lens, located near the eye, typically has magnifications of 5x, 10x, or 12.5x.
• 😀 The objective lens is placed near the object to be observed and has magnifications of 4x, 10x, 40x, or 100x.
• 😀 The ocular and objective lenses work together to magnify the image of the object being observed.
• 😀 The magnification power of the combined lenses is found by multiplying the magnification of the ocular and objective lenses.
• 😀 The microscope tube connects the ocular lens and the objective lens.
• 😀 The revolver holds the objective lenses and allows rotation to change magnification.
• 😀 The mirror reflects light from the light source and can be adjusted to obtain the right lighting for observation.
• 😀 The condenser gathers and focuses light onto the object, ensuring proper visibility.
• 😀 The diaphragm controls the intensity of light entering the objective lens, allowing for image brightness adjustments.
• 😀 The preparation table holds the object for observation and includes a clamp to secure the glass slide.
• 😀 The macrometer moves the objective lens quickly, while the micrometer allows for fine, slow adjustments of the lens focus.
• 😀 The microscope foot provides support and stability when the microscope is placed on a surface.

Q & A

What is the ocular lens, and what does it do?

The ocular lens, also known as the eyepiece lens, is the lens located close to the eye. It typically has a magnification of 10x, but can also be 5x or 12.5x. It helps in magnifying the image of the object being observed in combination with the objective lens.

What is the function of the objective lens?

The objective lens is positioned near the object to be observed. It has magnifications of 4x, 10x, 40x, and 100x, and it works together with the ocular lens to enlarge the image of the object.

How do the ocular and objective lenses work together?

The ocular and objective lenses work together to magnify the image of the object. For instance, if the ocular lens has a 10x magnification and the objective lens has a 10x magnification, the total magnification is 100x.

What is the role of the microscope tube?

The microscope tube connects the ocular lens and the objective lens, allowing the light from the objective to pass through to the ocular lens, enabling magnification.

What is the function of the revolver on a microscope?

The revolver is a rotating part where the objective lenses are attached. It allows users to switch between different objective lenses to adjust the magnification of the image.

How does the mirror function in a microscope?

The mirror reflects light from the light source towards the object being observed. It can be adjusted to direct the light properly for optimal viewing.

What is the purpose of the condenser in a microscope?

The condenser collects and focuses light from the mirror onto the object being observed. It helps ensure the object is properly illuminated, neither too bright nor too dark.

What does the diaphragm do in a microscope?

The diaphragm regulates the intensity of light entering the objective lens. It can be adjusted to allow more or less light, depending on the brightness needed for the object being observed.

What is the purpose of the preparation table in a microscope?

The preparation table is used to place the object (or slide) that is to be observed. It provides a stable platform for the object during examination.

What is the difference between a macrometer and a micrometer on a microscope?

The macrometer adjusts the objective lens quickly, moving it further or closer to the object, while the micrometer moves the objective lens slowly for finer, more precise adjustments to focus the image.