Why is it not advisable to lower the HPO using the coarse adjustment knob?

Why is it not advisable to lower the HPO using the coarse adjustment knob?

Coarse and fine adjustment The coarse adjustment knob should only be used with the lowest power objective lens. Once it is in focus, you will only need to use the fine focus. Using the coarse focus with higher lenses may result in crashing the lens into the slide.

Why should the fine adjustment knob be used only with the HPO?

The fine-adjustment knob on a light microscope focuses by moving the lens slowly and is used to focus on the specimen more clearly. It is used with the high-power objective lenses. The course-adjustment knob focuses by moving the lens quickly and is used to find the specimen your are observing.

What should the coarse adjustment knob never be used with?

Coarse and fine adjustment The coarse adjustment knob should only be used with the lowest power objective lens. Using the coarse focus with higher lenses may result in crashing the lens into the slide.

What happens when you adjust the coarse adjustment knob?

Coarse Adjustment Knob- The coarse adjustment knob located on the arm of the microscope moves the stage up and down to bring the specimen into focus. The gearing mechanism of the adjustment produces a large vertical movement of the stage with only a partial revolution of the knob.

When using the high power objective you should not adjust the Group of answer choices?

Never use the coarse adjustment when using high power. Doing so could break the slide or the microscope! 17. Watching from the side, switch to the high-power objective lens.

What should the fine adjustment be used only with HPO?

Use ONLY the fine focus control when focusing the higher power objectives (20X, 40X, 100X) on a slide. The course focus control is too course for focusing with these objectives. Objectives are fragile and must not be rammed into slides.

When you shift the objectives from HPO to oil immersion can you still use the coarse adjustment knob?

The reason is that if there is immersion oil on the slide, then objective should be lowered into the oil from the top and not from the side, to prevent smearing of the immersion oil all over the place. Use the coarse focus only with the 4x low power objective. You can use the fine focus knob with all objectives.

Why do you use the coarse adjustment knob on low power?

On LOW POWER ONLY, use the coarse focus knob to get the object into focus. If you cannot see anything, move the slide slightly while viewing and focusing. Why should the adjustment be used only with the high-power objective? Fine adjustment knob can be used only with the HPO so that the slides will not crash with the objective lens.

What does the coarse adjustment knob do on a microscope?

Coarse adjustment is used to focus the image on the microscope under low or medium power by using larger motions of the lens. (Note: Coarse adjustment should never be used during High power) The coarse adjustment knob on a light microscope focuses by moving…

What’s the difference between fine and coarse adjustment?

Microscope coarse and fine adjustment with separate knobs. You will notice that when you turn the knob it moves the stage (or the body tube depending on the type of microscope you have) much faster than the fine focus knob (the smaller one). The fine adjustment knob will be the smaller of the two knobs and when you turn

Which is better coaxial or fine focus knob?

The coaxial knob allows the user to change between the knobs by feel instead of having to pull away from the eyepiece to look for the desired knob. You will notice that when you turn the knob it moves the stage (or the body tube depending on the type of microscope you have) much faster than the fine focus knob (the smaller one).