The main parts of an optical microscope are: the eyepiece, objective lense and light source (sometimes a mirror). The objective lense has a short focal length so it produces an image a little bit up the microscope's tube which is then magnified by the eyepiece. Resolution is dependant on the numerical appeture of the lense and the wavelenght of the light source used.
no it is same
it has a convex lense because if it had a concave lense it wouldn't magnify, same with a flat lense.
It's in the centre of a round segment!
It's an Optical Axis.
''All microscopes contain the optical structure called a lens.''
No. If the simplest optical telescope means refractory telescope, then it would not contain a mirror at all. It would contain an objective lense pointing to the stars and an ocipital lense near your eyes.
Yes. The lense of a magnifying glass is a convex lense. Convex lenses bulge outwards from the center of the lense on both sides.
The main parts of an optical microscope are: the eyepiece, objective lense and light source (sometimes a mirror). The objective lense has a short focal length so it produces an image a little bit up the microscope's tube which is then magnified by the eyepiece. Resolution is dependant on the numerical appeture of the lense and the wavelenght of the light source used.
Compared to a uniform thickness lense, concave is where the lense is thinner towards the center of the focal point of the lense than at the thicker edge; convex is much like a magnifying glass where the lense is thicker near the center focal point than at the thinner edges.
axis or optical center
The Nikon D90 has plenty of lenses, but the highest one is capable of up to 35x optical zoom.
on the pass side of the cover there is a small indentationb in the center of the lense. Insert a small screwdriver and pry down gently to release the lense
no it is same
The imaginary line that extends straight out from the center of a reflective surface is the optical axis.
Open and secure the hood with the support bar. Locate the black retaining bar that secures the turn signal lense casing located directly behind and on top of the lense case. The retaining bar connects to the car body. With a flat head screw driver pop up the plastic fastener. The lense case is now loose and is connected only by two snaps. One snap is near the left center and one is on the right center. Use the screw driver to pry the lense case from the fender side while pulling the lense case straight out and towards the center of the car. Little effort is required. Be carefull with the car's finish as you pry the lense from the fender. Once the lense case is off, twist to remove the plug. Remove the bulb and replace it using bulb grease on the bulb's base to reduce moisture related problems. Reassemble the lense case by following the steps in reverse.
If you look through the lens at a distant point, the point image will not move when the lens is rotated slightly about a vertical or horizontal axis the goes through the nodal point. This is called the optical center. With a thin lens this is close to the geometric center, with a longer complex lens the optical center is buried somewhere inside. The optcial center of a complex lens may or may not be inside an element.