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2. 40-foot telescope - Wikipedia

   en.wikipedia.org/wiki/40-foot_telescope

   William Herschel 's 40-foot telescope, also known as the Great Forty-Foot telescope, was a reflecting telescope constructed between 1785 and 1789 at Observatory House in Slough, England. It used a 48-inch (120 cm) diameter primary mirror with a 40-foot-long (12 m) focal length (hence its name "Forty-Foot"). It was the largest telescope in the ...

3. Mirror - Wikipedia

   en.wikipedia.org/wiki/Mirror

   A mirror reflecting the image of a vase A first-surface mirror coated with aluminium and enhanced with dielectric coatings. The angle of the incident light (represented by both the light in the mirror and the shadow behind it) exactly matches the angle of reflection (the reflected light shining on the table). 4.5-metre (15 ft)-tall acoustic mirror near Kilnsea Grange, East Yorkshire, UK, from ...

4. This $40 mirror is 'like trying on clothes in a super fancy ...

   www.aol.com/lifestyle/gold-arch-mirror-walmart...

   Normally $80, this boutique-quality floor-length mirror is currently on sale for half-price at just $40. At 59-inches tall, it's big enough to double as a standing mirror but not too oversized to ...

5. Speculum metal - Wikipedia

   en.wikipedia.org/wiki/Speculum_metal

   Speculum metal. Speculum metal is a mixture of around two-thirds copper and one-third tin, making a white brittle alloy that can be polished to make a highly reflective surface. It was used historically to make different kinds of mirrors from personal grooming aids to optical devices until it was replaced by more modern materials such as metal ...

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Perfect mirror - Wikipedia

   en.wikipedia.org/wiki/Perfect_mirror

   A very complex dielectric mirror can reflect up to 99.999% of the light incident upon it, for a narrow range of wavelengths and angles. A simpler mirror may reflect 99.9% of the light, but may cover a broader range of wavelengths. Almost any dielectric material can act as a perfect mirror through total internal reflection.