Mirrors, Magnifying lenses, microscopes and telescopes

Mirrors shown in yellow reflect light to produce virtual images shown in red. Concave mirrors bend light outward to produce virtual images that are magnified.  

Convex lenses used as magnifying lenses or microscopes shown in blue bend light to produce both virtual images and real images. Virtual images are made by spreading out the light and are not inverted. They can not be captured on a screen like the retina. Real images are formed by focusing light and are inverted. They can be captured on a screen. 

Magnifying lenses and microscopes are convex lenses that produce virtual images that are magnified.

Telescopes are microscopes with a second large convex lens or mirror that captures dim light from big objects far away and focuses them on a spot close to the eye in a real image that is subsequently magnified.  

The convex lens in our eye focuses whatever it sees, whether a real or virtual image, and makes a real image that could be captured by our retina.    

Looking at an object in a concave mirror or thru a convex lens is the same as shown below. 







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lens focused as a magnifier 















In real life, people see the opposite of what you see in the mirror. This is because the mirror reverses the images that it reflects. A mirror switches left and right in any image that it reflects. One mirror is not enough to see yourself as others see you. When you look at the mirror, you see an image of yourself with the left and right reversed.

Standing in front of a man, your right  hand and his right hand are on opposite sides. You can easily shake hands.
Standing in front of a mirror, your right hand and that of your virtual image are at the same side.  You can not shake hands.



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