What should be the first thing you do when you want to read a microscope for light?
Reading microscope light is a very important step in the use of microscopes, some students in the light, casually turn an objective lens to the light through the hole, rather than the requirements must be used in low magnification to the light. Turning the reflector like to use a hand, often the reflector wrenched down. Therefore, when instructing students, teachers must emphasise the use of low magnification to the light, when the light is strong with a small aperture, plane mirror, while the light is weak with a large aperture, concave mirror, the reflector should be used with both hands to rotate, when you see a uniformly bright round field of view until. Do not move the microscope casually after the light has been corrected, lest the light may not pass accurately through the reflector into the light-through hole.
There are round holes of different sizes called apertures on the top of the shades, and the intensity of the light can be adjusted by aligning the aperture with different apertures. The specimen is usually located in the centre of the aperture for easy observation.
The meaning of magnification refers to the eyepiece magnification multiplied by the objective lens magnification. The eyepiece is called the eyepiece when it is close to the eye. The length of the eyepiece objective has no relation to the magnification. The distance between the objective and the slide has no relation to the magnification. Greater magnification is also related to the fact that the cells in the field of view are larger but fewer in number. Magnification has nothing to do with the brightness of the field of view and everything to do with the reflector and the shade.
If you move the eyepiece and the dirt moves, the dirt is in the eyepiece. If you move the objective lens and the dirt moves, the dirt is in the objective lens. Move the slide and the dirt moves, then the dirt is on the slide. Keep the other two still and move the other one to find out.
Low magnification then high magnification.
Unity: all have cell membranes, cytoplasm, ribosomes, nucleic acids. All cellular organisms have DNA and RNA and the genetic material is DNA.
Differences: the essential difference is that prokaryotes do not have a well-formed nucleus wrapped in a nuclear membrane.
