Physics of me |
PROJECT DEC. |
Finding the physics in our everyday life. I chose photography as my topic.
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Writing pease |
In photography, light gets shaped and changed in many ways. One of the primary ways light gets shaped is by refraction. Light gets shaped by a lens. When light hits the lens it bends. This happens because light moves slower through different materials. When light hits an atom, in the glass, the light becomes absorbed within the atom for a certain period of time, this is called the delay factor. After the delay factor, the atom reradiates the light. The delay factor causes the light to bend. When looking through water or a lens you see refraction and the bending of light. When light hits a plano-convex (see diagram) lens it gets bent towards a single point called the focal point on the convexed (curved) side of the lens. When a lens is focused correctly the focal point should be where the image/sensor is.
Sometimes in photography, when your aperture is closed your images may become less sharp or blurry. This is caused by light diffraction inside the lens. Light diffraction is when light hits a slit or hole and disperses over a larger surface area. This can happen in a lens when aperture blades interfere with the light. This can result in less sharp images because the light will mix together before hitting the image sensor. |