The uses of lenses to treat the vision defects
The vision The light rays reflect from the body to fall on the eye , The light rays refract when passing through the cornea then the lens ( the convex lens ) , The...
Tagged: The lenses
The types and uses of lenses in our life
The importance of lenses The lens is the transparent medium that refracts the light and it is limited with two spherical surfaces , The lens is usually made of the glass or the plastic...
The reflecting telescopes and their advantages and disadvantages
Reflecting Telescopes Reflecting telescopes use the mirrors instead of lenses to focus the light, The convex mirror is used to gather the light and reflect it back to a focal point to get the...
What are advantages & disadvantages of Refracting Telescopes?
The Telescope The telescope is an instrument that collects and analyzes radiation emitted by distant sources, The most common type is the optical telescope, It is a collection of lenses or mirrors that are...
Observing the space and the invention of Telescopes
The astronomical telescope Who was the first scientist who made the astronomical telescope? ” Galileo ” was the first scientist who made an astronomical telescope in 1609. It was made from the lenses to...
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