This article talks about how the human eye works by refracting light onto your retina. If it focuses onto a point in front of or behind your retina, you have nearsightedness or farsightedness. This is caused by irregularly shaped eyes which don't allow the cornea to refract and focus the light properly
This paper credits Willebrord Snel van Royen for discovering refraction. He was a Dutch mathematician and a geodesist. He created a law named after himself called "Snell's law". Also, he discovered the index of refraction which he called "n".
Scientists have developed a new technique called phase discontinuity that cause light rays to behave differently from traditional laws when reflected and refracted.
While refraction is common in our everyday lives, some bands thought it was so cool that they made it their logo.
One of these bands is Pink Floyd, whose logo demonstrates the refraction of a white light into the rainbow through a prism. Turns out, the designer wasn’t actually thinking about refraction when he created the picture. Instead, he was just looking to create a link with all of Pink Floyd’s live shows, which are well known for their lighting, and to include ideas like ambition and madness – characteristics of Roger Water’s Lyrics.
In the end, he produced a well-known design that we all recognize today.
The use of refraction and Total Internal Reflection is important because the light rays will enter the stone and will refract. Afterwards, the stone has to be cut a certain way to allow the light rays to reflect in the stone and refract out parallel to how the light rays entered the stone. By this, the stone will begin to sparkle like it is shining. This is important for jewelry stores because they want the stone to sparkle, so it can appeal to costumers that look at the stone, so they can buy the ring.
This article is about a man who uses the sun and refraction to create art onto wood. Sunlight refracts through glass and onto wood that he has set up. Since the light is concentrated, it burns through the wood allowing the artist to create breathtaking images. This type of art is called heliography and has been used for many centuries. This shows how refraction can be used for many different purposes.
The slowest recorded speed of light is a staggering 61 kilometres per hour. This was accomplished by refracting a beam through a cloud of matter in the Bose-Einstein condensate state. Its medium was over a hundred trillion times higher than that of glass in optical fiber.
People have noticed refraction for thousands of years, simply by the appearance of objects in water. Although this was the case, the actual law of refraction wasn’t discovered until the early 1600s, by a Dutch mathematician and geodesist called Willebrord Snel van Royen. He found that there was a fixed ratio between the incident ray and the refracted one, regardless of the angle of incidence. Since his name in Latin is “Snellius”, the mathematical equation was known as “Snell’s Law”, and not “Snel’s Law”.
This article talks about causes of change of speed and direction which is due to light going through different mediums. A rainbow is shown when each colour refracts at slightly different angles, they reflect the inside and then to create light. Secondary rainbows are caused by each ray reflecting twice and this causes the rainbow to be reversed, red is at the bottom and not top.
Light always takes the path that uses the least amount of time. In the site it gives an example, about a lifeguard saving someone in the ocean. The lifeguard must run on sand and then swim in the water to save the person. Because the lifeguard runs faster than she swims, she will cover more ground on sand and she won’t run directly at the person. But when she reaches the water she will go through the optimal entry point, which would allow the lifeguard to reach the person the fastest way possible.
An auto keratometer is a device used for the measurement of cornea anterior surface curvature, it provides central and peripheral curvatures of the cornea at different points and is used for measurement of astigmatism. It also measures pupillary distance and pupil size. An auto keratometer principle is based on refraction, the eye cornea anterior surface acts as a concave mirror and reflects the incoming light. A keratometer uses mires for the measurement of corneal curvature and mires are reflected from the corneal surface. This reflection is taken as an image by keratometers and is used for refractive index calculation, this refractive index is used for the measurement of corneal curvature.
This article details the use of sunlight and refraction through lenses to create art. The artist's name is Michael Papadakis and he has been creating "paintings" of the Statue of Liberty, mountains, and even animals for the past 6 years by using a lens to concentrate sunlight to burn images into wood. The process is called heliography and was created around 1822 by Joseph Nicéphore Niépce.
This article talks about the newest contribution to AR technology, glass wafers. What makes this so special is its index of refraction, as it's key in how the light changes its properties. This is important, because with AR, it's meant to be a completely immersive experience. Higher refraction means higher contrast and light, allowing vision as far as 65 degrees.