What are the functions of the base and the arm of the microscope?
The correct answer and explanation is:
Correct Answer:
The base of the microscope provides support and stability, while the arm connects the base to the upper parts and is used to carry the microscope safely.
Explanation (300 words):
The base and the arm of a microscope are essential structural components that ensure the instrument can be used effectively and safely. The base is the bottom part of the microscope that rests on the laboratory bench or table. Its main function is to support the entire weight of the microscope and keep it stable during use. Without a sturdy base, the microscope would easily tip over, which could damage delicate lenses and mechanical parts. Some bases also contain built-in illumination systems, such as a light source or a mirror to direct light upward through the specimen.
The arm is the curved or straight structure that rises from the base and supports the optical parts, including the stage, body tube, and lenses. The arm serves two important purposes. First, it physically connects the base to the upper section, holding the microscope’s parts in proper alignment. Second, it acts as a handle for safely carrying the microscope. To prevent accidents, students and scientists are taught to carry a microscope by holding the arm with one hand and supporting the base with the other hand. This method of carrying balances the weight and reduces the risk of dropping or bumping the instrument.
Both parts play a role in ensuring that the microscope can be positioned correctly and handled without causing damage. If either the base or the arm is damaged, the microscope may become unstable or misaligned, leading to poor image quality or complete failure to function. Proper care of these parts extends the lifespan of the microscope and maintains the precision needed for clear magnification and observation. Good laboratory practice includes regular cleaning and cautious handling to protect the base and arm from impact and corrosion.