Windows and Mirrors

A concave mirror is a reflective surface that curves inward, like the interior of a bowl. It can reflect light to converge at a focal point in front of the mirror. Concave mirrors are commonly used in reflecting telescopes and makeup mirrors.

A parabolic mirror is shaped such that parallel incident light is reflected to a point called the focus. You will have to establish the size required, and the shape. There is an entry in Wikipedia on Parabola, giving the algebra.

focal length = half radius of curvature 3/2 = 1.5 focal length of mirror is 1.5m 1/f = 1/u + 1/v 1/1.5 = 1/5 +1/v the focal length is negative however because it is a diverging mirror so -1/1.5 = 1/5 + 1/v -1/1.5 - 1/5 = 1/v -10/15 - 3/15 = 1/v -13/15 = 1/v -15/13 = v v = -1.15m the image is 1.15m back from the mirror and is virtual, diminished and upright magnification = v/u -1.15/5 = -0.23 the image bus is 0.23 times smaller than the object

A concave mirror will tend to "focus" light to some degree, depending on the curvature of the mirror. A parabolic mirror will bring reflected light to a sharp focus, and telescopes use this type of curve for the shape of their reflective surface. And for exactly the reasons you think they do. Want links? You got 'em....

Doctors use concave mirrors, in motor cars convex mirrors as rear view mirrors and in case of solar cookers concave mirrors to concentrate solar radiations.

No, that's concave

Convex is thin at the edges and thick in the middle.

concave mirror is a solar device

The reflective surface is a mirror. It can be highly polished metal or chromed, the surface of a calm area of water, or a flat glass plate with a silvered back and a protective coating.

A plain mirror works by reflecting light off its smooth surface, creating a clear and upright image of the object placed in front of it. The reflection preserves the size and shape of the object without altering it.

To test mirror magnification, you can place a ruler at a known distance from the mirror and measure the size of the reflected image. By comparing the size of the image to the actual size on the ruler, you can determine the magnification factor of the mirror.

The chemical name for removing mirror back paint is Methylene chloride, commonly found in paint strippers. It is a solvent that breaks down paint and can be used for stripping paint off mirrors.

Parabolic mirrors are used in search lights because they can reflect light rays in a parallel direction, which helps to focus the light and create a more intense beam. This allows the searchlight to project a concentrated beam over long distances, making it useful for applications such as signaling, search and rescue operations, and outdoor events.

An erect but virtual image of same size but with lateral inversion

Double pane glass are passive items, they don't "do", or regulate anything. But doble paned windows are better insulated than single paned windows, which means it'll be easier to keep the room/house at a steady temperature.

The space between the panes is filled with an inert gas - instead of air. This provides a 'barrier' to slow down the escape of heat from the room. Additionally, the panes are often coated with a microscopically thin layer of reflective material to help retain the heat inside the building.

The reflecting surface of a concave mirror curving inward towards the focal point causes light rays to converge after reflection, creating an image. The curvature determines the mirror's ability to converge or diverge light, impacting the image's properties like size, nature, and location.

Concave mirrors can distort the reflection of the face, making it difficult to accurately apply makeup. The curved surface can also cause the image to appear magnified or shrunk in certain areas, leading to uneven application. Additionally, concave mirrors can create sharp, focused reflections that may not provide a true representation of how the makeup looks in natural lighting.

A practical use for a convex mirror is in security and surveillance systems, such as in stores or parking lots. The mirror's wide field of view allows for increased visibility of blind spots, helping to prevent theft or vandalism.

A convex mirror is called a diverging mirror because it causes light rays that hit it to diverge or spread out. This results in the image formed by the mirror appearing smaller and located behind the mirror compared to the actual object.

In department stores, you typically see concave mirrors, which curve inward. These mirrors are used to provide a wide-angle reflection to help customers see themselves from different angles while trying on clothes or accessories.

The presence of water vapor due to faulty seals is what causes double pane windows to sweat. Double window panes sweat because sunlight causes the gas inside to expand which stresses the seal and allows water vapor inside.

When you blow on a mirror, the warm air from your breath can cause the mirror to fog up temporarily due to condensation. This happens because the warm air contains water vapor, and when it hits the cold surface of the mirror, it cools and turns into water droplets on the mirror's surface.

A rearview mirror is typically used by a motorist to see the road behind them. This type of mirror is usually located on the windshield or dashboard and provides a reflection of the rear view of the vehicle.

The true surface of a mirror is invisible because it reflects light rays in a way that creates images of objects in front of it. This reflection causes the mirror to appear as if it is transparent and not showing its actual reflective surface.

It is possible for mirrors to crack if subjected to rapid and uneven heating, as this can cause thermal stress. It is recommended to use caution when heating mirrors to avoid potential damage.

When a chlorophyll molecule absorbs a photon of light, Photons strike the "antenna" of the chlorophyll molecule. This causes electrons in the photo-reaction centers that are attached to the antennas to become excited and move to a higher energy level. That's photoexcitation. The valence electrons in Magnesium (part of the chlorophyl molecule) jump to an excited state.