Final answer:
- 1.Illustration a: Use both hands to hold the microscope. Using one hand, support the arm beneath the base.
- 2.Illustration b: Position the arm of the microscope facing you on a table.
- 3. Illustration c: Avoid putting your fingers on the glass portion of the lenses.
- 4. Illustration d: To clean the lenses, use only a certain type of lens paper.
Step-by-step explanation:
1. Illustration a: Illustration a depicts the proper way to hold a microscope. To ensure stability and prevent any accidents, it is important to use both hands while holding the microscope. One hand should be placed under the base to support the arm of the microscope. This helps in maintaining a steady grip and prevents the microscope from slipping or falling.
2. Illustration b: In illustration b, the correct positioning of the microscope is shown. The arm of the microscope should face you, meaning it should be oriented towards your direction when placed on a table. This allows for easy access to the different controls and adjustments on the microscope, ensuring a comfortable and convenient viewing experience.
3. Illustration c: Illustration c highlights an important precaution when using a microscope. It is crucial to avoid touching the glass portion of the lenses with your fingers. This is because the oils and debris present on your fingers can transfer onto the lenses, leading to smudges or damage to the lenses. To prevent this, it is recommended to handle the microscope using the designated parts, such as the frame or focusing knobs.
4. Illustration d: In illustration d, the proper cleaning method for microscope lenses is emphasized. When it comes to cleaning the lenses, it is important to use a specific type of lens paper designed for this purpose. Regular tissues or other materials may contain particles that can scratch or damage the delicate lenses. Using the appropriate lens paper helps ensure a gentle and effective cleaning process without compromising the quality or integrity of the lenses.