It is also known as iris, it helps change the intensity and the size of the cone of light that is illuminated upwards in the slide. Also, it is located just above the condenser.

A microscope is usually made up of two main parts, a part that holds and supports the microscope and its components, and the optical part that is used to examine or observe the images of a specimen/object. So let’s study more about these parts of the microscope and their uses.

The arm is the structural part that connects the head part of the microscope to the base. It is also used for carrying the microscope.

Absorbance

It is a flat platform found just below the objective lenses and there is a test specimen/sample that is placed over it for simple viewing. Also, most microscopes consist of a mechanical stage that has a knob to control the slide.

2. One common historical belief was that coloured objects in nature produce small particles (perhaps light particles) that subsequently reach our eyes. Different objects produce different coloured particles, thus contributing to their different appearance. Is this belief accurate or not? Justify your answer.

These are located over the objective lenses and these two adjustable knobs are commonly known as the Fine Adjustment Knob and the Coarse Focus Knob. The first dial that is used to bring the object/specimen in focus is the Coarse Focus Knob and the second dial that is used to bring the specimen in focus is the Fine Focus Knob.

Just below the eyepiece tube, the nosepiece is located. It is used to hold the objective lenses. The nosepiece is also known as a revolving turret. It is also used to change the magnification power by simply rotating it.

These are located just below the nosepiece. There are usually 3 to 4 objective lenses in a microscope with different magnification powers. Also, 4x (scanning objective), 10x (low power), 40x (high power), and 100x (oil immersion) are the most common kinds of objective lenses.

Waterabsorptionspectrum

The aperture is the hole in the stage that is located just below the objective lenses. It helps in transmitting the base lightly to the stage.

At specific frequencies, the electrons of the atom tend to vibrate. When a light wave of the same natural frequency is incident on the atom, the electrons of that atom will be set into vibrational motion. During vibration, electrons interact with neighbouring atoms in such a manner it converts the vibrational energy into thermal energy. Hence, we can conclude that the selective absorption of light occurs when the frequency of the light matches the frequency at which the electrons in the atoms vibrate. Different atoms and molecules possess different natural frequencies of vibration, hence they will selectively absorb different frequencies of visible light.

Absorptionspectrum

When the room lights are turned off, any object present in the room appears black. The colour of the object depends on the frequency of the light that is reflected in the observer’s eye. Without light, there is no reflected light as a result of which the green shirt appears black.

It regulates the distance of the stages. Moreover, it also prevents the objective lens from being too close to the specimen slide. It is found over the stage.

It is located above the head portion of a microscope and it is used to connect the ocular lens and eyepiece to the objective lenses.

The eyepiece is seen at the top of the microscope and it consists of two lenses: the ocular and the eyepiece. The power of an ocular lens usually varies from 5x to 30x.

These lenses are used to increase the magnification levels, and to bring together the light rays coming from all the points of the specimen/object.

A microscope is an instrument that is used to examine objects which are too tiny. There are different types of microscopes used for different purposes. It is mainly used by forensic scientists, jewellers, technicians, investigators, biological scientists, etc.

The use of an eyepiece in the microscope is to see the specimen and identify the image of the specimen. It also helps to correct the defects that are present in the specimen.

A condenser lens is used to illuminate the light that shines through the slides and helps attain the sharp images of the object to be studied or observed on the microscope stage. They have a very high magnification of 400X. These condensers that have high magnification powers usually produce a high-quality image.

Optical Parts: Eyepiece, Eyepiece tube, Nosepiece, Objective lenses, Adjustment knob, Stage, Stage clips, Aperture, Microscopic illuminator, Condenser, and Diaphragm

This view presumes that the appearance of an object is independent of the colours of light which illuminate the object. It must be noted that the same objects appear to be of different colour under a different light. Hence, the colour of an object is strictly not due to the object’s ability to produce a colour. The only role the object plays in determining its appearance is by absorbing certain wavelengths of the incident light.

The optical microscope contains an internal source of light known as an illuminator. It is located at the base of the microscope. These work as a built-in light source of a microscope, and even catch the light from other external sources.

Light is the only electromagnetic radiation that is visible to the human eye. It is made of little packets of energy known as photons. When a light wave is an incident on an object, a number of things can happen. It is either absorbed, transmitted or reflected. The manner in which visible light interacts with an object depends on the frequency of light and the nature of the atoms of the object. In this article, we will discuss how and why the light of certain frequencies are selectively absorbed, reflected and transmitted.

The course focusing knob should never be used when using high power as it can easily crunch the objective through the slide.

The microscope is made up of various parts categorised as structural and optical parts. And each part of the microscope has different functions and importance. The microscope sits on a base and its arm connects the base to its head. The adjustment knobs can be found below the arm, and the stage is where the aperture, specimen and diaphragm are located. The eyepiece and objective lenses are located just at the top of the arm. Also, the arm acts as a handle for a microscope. In this article, we learnt about microscope parts and functions. We also looked at the different types of microscopes.

Contrary to the absorption of light, transmission and reflection of light occur when the natural frequency of the vibration of electrons do not match the frequencies of the incident light. In such cases, when the light wave strikes the objects, the electrons of the object begin to vibrate. The electrons vibrate for a brief period of time with small amplitude after which the energy is re-emitted as a light wave. If the object under consideration is transparent, the vibrations of the electrons are passed on to the neighbouring atoms and are re-emitted from the opposite side of the object. In such cases, the light is said to be transmitted. If the object is opaque, the vibrations of the electrons are not passed in bulk, rather the electrons of the atoms vibrate for a short period of time and are re-emitted as a reflected light wave from the surface of the object.

The colour of the objects that we see is largely due to the interaction of the object with the incident light. The colour of the object is not within the object itself. Rather, it is in the light that shines upon it. When the light of a certain frequency falls on the object, the light frequencies that are absorbed never make it to our eyes. Only the frequencies of incident light that are reflected or transmitted contributes to the colour of the object. So if an object absorbs all the frequencies of the light wave except the frequency associated with green, then the object appears green.

The head is the uppermost part of the microscope and this head portion is also known as the body tube. It connects the eyepiece and objective lenses.

The parts of the microscope and their uses are divided into two categories: structural parts and optical parts. You may have seen a microscope before but to remember the names of all its parts and their functions, let’s dig deeper into this article.

Every microscope has two stage clips and it is located just over the stage. The function of stage clips in the microscope is to hold the object/specimen slides in place.

The optical parts are the main parts of the microscope as these are used to observe or examine the specimen. So let’s read about each microscope's parts and functions thoroughly.

As the name suggests, the structural part of a microscope gives the support and handles all the components of a microscope. As we already know the names of these parts, let’s read more about them in detail.