Что (кто) такое refract - определение

PHYSICS; CHANGE IN DIRECTION OF A WAVE

Refracted; Refract; Refractive; Apparent depth; Refringence; Refracting; Refraction of waves; Light refraction; Refrection of light; Refractions; Light Refraction; Refraction of light; Optical surfaces; Refracts; Wave refraction

$Water waves are almost parallel to the beach when they hit it because they gradually refract towards land as the water gets shallower.$
$The sun appears slightly flattened when close to the horizon due to refraction in the atmosphere.$
$An image of the [[Golden Gate Bridge]] is refracted and bent by many differing three-dimensional drops of water.$
$A pen partially submerged in a bowl of water appears bent due to refraction at the water surface.$
$A pencil part immersed in water looks bent due to refraction: the light waves from X change direction and so seem to originate at Y.$
$2D simulation: refraction of a quantum particle.The black half of the background is zero potential, the gray half is a higher potential. White blur represents the probability distribution of finding a particle in a given place if measured.$
$A ray of light being refracted in a plastic block.$
$Refraction of light at the interface between two media of different refractive indices, with n2 > n1. Since the phase velocity is lower in the second medium (v2 < v1), the angle of refraction θ2 is less than the angle of incidence θ1; that is, the ray in the higher-index medium is closer to the normal.$

refract

v. a.

Deflect (rays), deviate, turn from a straight course.

refract

¦ verb

1. (of water, air, or glass) make (a ray of light) change direction when it enters at an angle.

change the direction of propagation of (radio, sound, or other waves) by causing them to travel at different speeds at different points along the wave front.

2. measure the focusing characteristics of (an eye).

Origin

C17: from L. refract-, refringere 'break up'.

refract

(refracts, refracting, refracted)

When a ray of light or a sound wave refracts or is refracted, the path it follows bends at a particular point, for example when it enters water or glass.

As we age the lenses of the eyes thicken, and thus refract light differently.

...surfaces that cause the light to reflect and refract.

VERB: V n, V

• refraction

...the refraction of the light on the dancing waves.

N-UNCOUNT

Википедия

Refraction

In physics, refraction is the redirection of a wave as it passes from one medium to another. The redirection can be caused by the wave's change in speed or by a change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction. How much a wave is refracted is determined by the change in wave speed and the initial direction of wave propagation relative to the direction of change in speed.

For light, refraction follows Snell's law, which states that, for a given pair of media, the ratio of the sines of the angle of incidence θ₁ and angle of refraction θ₂ is equal to the ratio of phase velocities (v₁ / v₂) in the two media, or equivalently, to the refractive indices (n₂ / n₁) of the two media.

{\frac {\sin \theta _{1}}{\sin \theta _{2}}}={\frac {v_{1}}{v_{2}}}={\frac {n_{2}}{n_{1}}}

Optical prisms and lenses use refraction to redirect light, as does the human eye. The refractive index of materials varies with the wavelength of light, and thus the angle of the refraction also varies correspondingly. This is called dispersion and causes prisms and rainbows to divide white light into its constituent spectral colors.

https://en.wikipedia.org/wiki/Refraction

Примеры произношения для refract

1. they barely refract light.

The Science of Great Barbecue and Grilling _ Meathead Goldwyn _ Talks at Google

2. and they actually bend and refract microwaves.

Losing the Nobel Prize _ Brian Keating _ Talks at Google

3. going to sort of refract that experience.

Phuc Tran _ Sigh, Gone _ Talks at Google

4. With no medium to refract the light hitting its lens, Hubble is able to take brilliantly

Why Do Stars Twinkle

5. from each droplet will refract at the exact angle necessary to directly reach your eye.

How Do Rainbows Form

Примеры употребления для refract

1. They refract back on job creation and labour markets.

2. The semi–independent structure will be covered by a roof composed of a "veil of glass discs that will refract light", said one of the two principal architects, Italian Mario Bellini.

3. Throughout the sculpture, vibrating parts make noises, and every few seconds, motorized levers cause small metal balls to drop and "ding." Mirrors on the walls reflect and refract (bend) light from windows above the sculpture.