They were made out of sand.
Yes, you can get mirrors made and all types of shapes and even colors that can be used just for decoration.
A simple periscope is a tool made from two mirrors which can be used to observe objects that are not directly in your line of sight.
Convex mirrors.
No, mercury is not used in mirrors. Mirrors are typically made with a glass sheet that is coated with a thin layer of silver or aluminum to create the reflective surface. Mercury is toxic and not suitable for use in mirrors.
Yes, Sumerians did have mirrors, but I'm not sure if they were like the ones we use today. The metalworkers made cups, mirrors, jewelry, &c., and were pretty good at it. The mirrors were probably made of brass or something like it, but I'm not sure if the metal was the mirror or if they used glass. I'm sure they used silver and had the reflective stuff like we do today, so it's likely they had mirrors that were just less reflective.
Reflective mirrors, typically made of glass with a reflective coating, are used in car headlights to direct and focus the light produced by the bulb. These mirrors are designed to help distribute the light in a specific pattern to improve visibility for the driver and other road users.
Nothing ,if it is made of mirrors there would be no light to reflect !
No, mirrors do not have to be made of glass to be reflective. Mirrors can also be made using other materials like metal or polished stone that have reflective properties.
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No, magnets do not stick to mirrors because mirrors are made of glass and metal, which are not magnetic materials.
Concave mirrors are used to focus light, to produce a parallel beam in car headlights, and so you can have a close look while shaving. Convex mirrors are used for making telescopes, viewfinders in vehicles, and used in supermarkets or stores as surveillance as it gives a wider view.
Concave mirrors are used in telescopes. Convex mirrors are used as side-view mirrors in cars.