Convex lenses
If the object is of the same width and tapers from thick to thin, it may be a wedge.
ANSWER:No. The glass isn't thin enough to be effected by the gradient temperature change. If they were thinner, maybe. But most eye glasses are thick enough to accept the change in temperature.
You Tell me
Crude Oil.
COTTON is usually thick and there is a lot of cotton in a country called Pakistan and they use thick cotton and pillows are made at of thick cotton. And flannel is rough like when you have a old sweater you could feel these rough small balls on it. SO COTTON IS THICK AND FLANNEL IS ROUGH. . . . I'M A 11 year old kid! I GOT 96 IN ALL CLASSES. SO BELIEVE ME.
A convex lens.
oncave
half 8
Concave. The opposite- thick in middle, thin at edges- is convex.
That's commonly called a border. Borders can be as thin as one pixel, or as thick as you want !
In optics, a thin lens is a lens with a thickness (distance along the optical axis between the two surfaces of the lens) that is negligible compared to the focal length of the lens. Lenses whose thickness is not negligible are sometimes called thick lenses.
Convex lenses, which magnify, correct hyperopia. Below, is a previous wiki answer to this question in detail.Convex are thicker in the middle and thin out at the edges. These lenses magnify and are used for reading glasses and to correct long-sightedness (hyperopia).Concave lenses are thin in the middle and thick towards the edges. These lenses shrink things and are used to correct short-sightedness (myopia).A good example of this is to take a spoon and look at your reflection in it. Looking at the concave side of the spoon (the front) will make you look smaller, looking at the convex side of the spoon (the back) will make you look biggeRead more: Which_type_of_lens_magnifies_-_convex_or_concave
A convex lens.
thumbus a plant like lettuce but with spiky edges and thick creases in the edges
No, that's concave Convex is thin at the edges and thick in the middle.
because thick lenses have small focal length . this causes chromatic aberration. hence it can be minimised by increacing the focal length of lens or by using thin lenses which have high focal length.
It have a shorter focal length because there is more time for the light rays to come together