3200x
In biology, the eyepiece in a typical light microscope is used for magnifying the image being viewed (the field of view) by 10 times. Secondly, the eyepiece also has a scale on it which is visible when you look down through the microscope at an image, or at your field of view. This scale has divisions on it which you can use to measure the length of the cellular structures you are looking at. So basically, the eypiece magnifies the image and has a scale on it which you can use to measure the structures in the cell.
In a simple microscope, a lens magnifies the image of the sample. in a compound microscope, the objective lens magnifies the image (there may be more than one objective lens) and the eyepiece lens enlarges the virtual image (which is typically inverted by the objective lens).
1.hold the neck with one hand 2. put your other hand underneath the base 3. Wind stage all the way up to the top 4. Make sure that the smallest objective lens is in front 5. place slide in the centure of stage and put the stageclips on 6. look throught the eyepiece and focus the slide 7. when you are finished take the slide off and get a piece of lens paper NOT A TISSUE OR TOILET PAPER THAT RUINS THE LENS 8. wipe each objective lens with the lens paper and the eyepiece to 9. DO NOT TOUCH THE LENS WITH YOUR FINGERS!!! THAT RUINS IT TO!! 10. place dust jacket over microscope and carry it (repeat steps 1&2) to a safe place. 11. Store it in a clean, dry place.
The following applies to an SLR and may not apply to a DSLR. It can mean either: a) simply reducing the light transmitted to the film or camera sensor by way of adjusting the aperture so that it is smaller. b) manually reducing the aperture from full-open before taking the picture to either i) preview the depth of field through the viewfinder or ii) take a meter reading at the aperture that will be used for the shot in order to arrive at the corresponding shutter speed or iii) take the shot with the aperture stopped down, forcing the camera meter to calculate the shutter speed at the moment of exposure. The latter two are referred to as stop-down metering. To do so and allow ambient light to enter the viewfinder eyepiece (say, because you mount the camera on a tripod and stand back from the camera) would be a mistake since light entering the eyepiece will alter the meter reading. One reason for performing stop-down metering is because the lens has been attached to the camera body by means of a reversing ring. In this case, the lens levers and pins cannot transmit the aperture information to the camera in order for the meter to calculate the exposure. Not all cameras have stopped-down metering capability, for sure. My old Canon A1 does, and has a lever controlled metal blind that covers the eyepiece to prevent stray light from entering.
Few cameras have the ability to adjust the eyepiece, so clip on diopter adjusters could be purchased. I haven't seen one for a long time and doubt they will be around forever with the advent of digital viewing screens.
magnifications of a microscope
it supports the upper part of the microscope where the eyepiece, draw tube , body tube and the objectives is placed .
A draw tube is one of two tubes that is in a monocular microscope. It is the tube that carries the eyepiece.
First of all, it's an eyepiece and objectives, and second of all, yes.
body tube - for microscope
The draw tube and the body tube connect the eyepiece to the revolving nose-piece.
to hold the eyepiece and rotating objectives. there are reflection process inside the stereohead.
4300x
Magnification of objective multiplied by magnification of eyepiece. I usually work with 40x and 60x ojectives and 10x eyepiece, so total magnifications of my observations are respectively 400 and 600 times.
the lenses. everything else is just support structure.
To determine the magnification of the eyepiece on a microscope take the total magnification for the microscope and divide it by the total magnification of the objective lens. The answer is what the magnification is for the eyepiece.
AnswerOcular Lens is another name for the eyepiece of a compound microscope.