Common fault causes and adjustments in the use of microscopes
1. Unclear opacity under the microscope
Main reasons: unclean or moldy lenses.
Exclusion method: When there is dust or dirt on the lens, use a brush or feathers to remove it, and then use lens paper or degreased cotton dipped in a little anhydrous alcohol or ether to carefully wipe along the circular trajectory, but do not let the wiping liquid lose.
2. The edge of the indentation cannot be clearly seen inside the mirror
Main reason: Some lenses are loose.
Troubleshooting method: Tighten the loose parts of the lens again.
3. The scale value of the reading microscope does not coincide with the scale of the standard ruler
Main reasons: Loose objective lens or missing gasket at the connection between objective lens and lens barrel, resulting in changes in focal length.
Exclusion method: Tighten the objective lens. If the gasket is lost, it should be repeatedly adjusted in thickness and matched with a suitable gasket until the position with the smallest scale error is reached.
4. The scale value of the reading microscope is larger than that of the standard ruler scale
Main reason: Lens tube growth, possibly due to loose lens tube joints.
Troubleshooting method: Tighten the lens tube joint again.
The purpose of the microscope:
Biological microscopes: Generally speaking, microscopes can be divided into stereo microscopes and biological microscopes. Due to different purposes and requirements, many branches have emerged, but the basic principles remain the same. Polarization, phase contrast, transmission, and falling light are still classified as biological microscopes.
Stereoscopic microscope, also known as anatomical microscope, solid microscope, and stereo microscope, is a versatile microscope. It is easy to operate, has low requirements for specimens, has a long working distance, and has a strong sense of three dimensionality when observing. It can be used to observe physical objects or perform some operations on specimens while observing. Instead of slicing the specimen like a biological microscope, slicing requires corresponding technology and equipment. Therefore, stereo microscopes have a wide range of applications in fields such as microelectronics, precision instrument assembly and maintenance, and micro engraving. Widely used in anatomy and microsurgery in the fields of biology and medicine (currently classified as surgical microscopes), the light source used in biology and medicine can only be a cold light source (fiber optic); Used in industry for observation, assembly, inspection, and other work of small parts and integrated circuits.
