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What is the name given to a piece of glass having one or two spherical surfaces?
A lens
What lens has an object more than two focal lengths from the lens that will have an inverted message?
it is convex lens ;)
What are two basic kinds of lenses?
Two basic kinds of lenses are the concave lens and the convex lens.
What uses two lens and mirror?
Reflecting TelescopeA reflecting telescope uses a lens and two mirrors. The lens is positioned at the eyepiece, and thus the focus, which the two mirrors generated by specifically redirected light. There are two types of reflecting telescopes with one lens and two mirrors, the Newtonian Focus and the Cassegrain Focus.
How does a two lens microscope work?
047
A Microsoft with two lens call what?
Bill Gates wearing glasses?
What are the glasses called that have lines for lenses?
They are still called glasses .......................i thinkThey are called bifocals. This means that there's two different prescriptions on the same lens.
Jim bought a pair of glasses the lenses had six sides the lenses were in the shape of a?
A two dimensional shape with six sides, such as the lens for Jim's glasses, is called a hexagon. Another common example of a hexagon is a stop sign.
List two uses for concave lens?
Both concave and convex lenses are used in glasses; A microscope, like a reflecting telescope, uses a concave mirror, a plane mirror, and a convex lens; A refracting telescope uses two convex lenses to magnify images in the sky; binoculars use concave lenses to improve detail.
How did bifocal got its name?
Two focal lengths in one lens.
What is the name of the glasses which can focus on two lengths at the same time?
Glasses like this are called bi-focals. Bifocals
What is another name for eye shape?
This shape is called a lens, a biconvex shape comprising two circular arcs, joined at their endpoints. Loosely, it could be said to be an ellipse.
How do you switch a prescription for glasses to contacts?
You don't. The optometrist has to do a contact lens evaluation and fitting. Contact lenses Rx's are done separately,not to be mistaken for routine exam. Most insurances don't cover contact lens fittings. Contact lenses do not mean you can wear an old pair of glasses as backup. You will need a good pair of glasses with current Rx properly fitted. Contact lens Rx is good for one year to the day and glasses Rx is good for two years to the day.
What are two uses for a convex lens?
Concave lenses are used in glasses for people who are near-sighted. Convex lenses are used in glasses for people who are far-sighted.
Do you say two pairs of glasses or two pair of glasses?
two pairs of glasses
How do you get super glue of glasses with out scratching lens?
ok before you do any thing STOP what your doing. Don't try to scratch of the super glue, if you do you will scratch the lens. so soak the glasses in hot water for an hour or two to break down the glue then get a rag and rub the glue off. if it does not work the first time and do process over again. Good Luck.
What is the name given to a piece of glass having one or two spherical surfaces?
A lens
