What do you do if more light is needed to view the specimen?
Describe what to do if more light is needed to view the specimen. The objective lens can be used to increase light, and the focus knob can be adjusted as well.
What determines how much light shines on the specimen?
The diaphragm determines how much light shines on the specimen. 3. The lower power objective has a greater magnification than the medium power objective.
Are all threads visible under low magnification?
Notice that all three threads are fairly well in focus, although the white thread on the bottom is a bit blurry. At low magnification, things appear bright, and it is easy to bring them into focus. Once you have explored the threads at 40X, switch to a higher powered objective.
Why do you start at the lowest power lens when viewing slides?
When using a light microscope it’s important to start with the low power objective lens as the field of view will be wider, increasing the number of cells you are able to see. This makes it easier to find what you’re looking for.
What can you do to avoid accidentally crushing a glass slide with the objective lens?
Slides should be held by the edges, avoiding the cover glass area. Always begin viewing a slide using the microscope’s lowest magnification. This reduces the risk of contact by the microscope’s objective lens. Afterwards, switch to a higher magnification if needed.
Should the light be turned up or down before you turn the microscope off?
A hole in the center of the stage allows light to pass from the light source beneath the stage through the slide specimen, which should be centered over the hole in the stage. Always turn the light off when you are not using the microscope.
When you first begin to work with the microscope before turning the light on you should always?
When you first begin to work with the microscope, before turning the light on you should always: turn the light rheostat to low intensity. After placing a slide onto a microscope to observe specimen, you should: begin at scanning power.