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Because the oil will dry and distort the refraction of the light through the objective.
Because that lens (it does not HAVE to be a 100x lens - other lens magnifications are also available in oil immersion constructions) is made to be in contact with a drop of special oil which covers the specimen. The oil has the same index of refraction as the front lens glass and that way a different optical construction can be used.
A total immersion thermometer is one that has been calibrated to read correctly when the entire thermometer is submerged in a homogeneously temperated liquid/medium.
A total immersion thermometer is one that has been calibrated to read correctly when the entire thermometer is submerged in a homogeneously temperated liquid/medium.
Hydrometer is nothing but a tube kept floated in the liquid. If we keep the same weight within the tube then it is known as constant weight hydrometer. So it would immerse more in less denser liquid and the depth of immersion will be more So density of the liquid = Depth of immersion in water / depth of immersion in the liquid
oil immersion
Wet mounts are not attached to the slide, it is "floating". If you use an oil immersion lens, you have to put a drop of oil on the slide cover so the light can correctly focus. The oil will cause the slide cover to stick to the end of your Oil immersion lens. When you focus the field of focus will stay the same since the slip cover is stuck to the lens. When you go to change objectives, the cover will travel with your oil immersion lense.
100x lens is used with oil immersion
Oil immersion is a technique used to increase the resolution of a microscope.
The objectives are what magnify an item. They are usually 10x, 40x, and 100x. These are also known as low power, high-dry, and oil immersion. Some microscopes also have a 4x for quick scanning.
Cedar wood oil
This is because of the refractive propoties of the immersion oil. The oil works as a sort of secondary lens, magnifying the specimin in addition to the lens alresdy present.
If you are using the oil immersion objective on a microscope, you must use oil to increase the resolution of the lens. These lens are used at very high magnification.
Liquid paraffin, also known as mineral oil, is commonly used with oil immersion objectives in microscopy because it has a refractive index similar to that of glass and the immersion medium used in the objective. This reduces the loss of light due to refraction and increases the numerical aperture, allowing for better resolution and increased imaging quality. Additionally, liquid paraffin has a high viscosity which helps to prevent the formation of air bubbles and ensures a stable imaging medium.
because immersion oil has same refractive index as like lens glass of microscope so it give clear image of object
place a drop oil on the side
no