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2. Light - Wikipedia

   en.wikipedia.org/wiki/Light

   Light exerts physical pressure on objects in its path, a phenomenon which can be deduced by Maxwell's equations, but can be more easily explained by the particle nature of light: photons strike and transfer their momentum. Light pressure is equal to the power of the light beam divided by c, the speed of light.

3. Optical medium - Wikipedia

   en.wikipedia.org/wiki/Optical_medium

   In optics, an optical medium is material through which light and other electromagnetic waves propagate. It is a form of transmission medium. The permittivity and permeability of the medium define how electromagnetic waves propagate in it.

4. Visible spectrum - Wikipedia

   en.wikipedia.org/wiki/Visible_spectrum

   Visible-light spectroscopy is an important tool in astronomy (as is spectroscopy at other wavelengths), where scientists use it to analyze the properties of distant objects. Chemical elements and small molecules can be detected in astronomical objects by observing emission lines and absorption lines .

5. Optical engineering - Wikipedia

   en.wikipedia.org/wiki/Optical_engineering

   Optical engineering is the field of engineering encompassing the physical phenomena and technologies associated with the generation, transmission, manipulation, detection, and utilization of light. [2] Optical engineers use the science of optics to solve problems and to design and build devices that make light do something useful. [3]

6. Radiation - Wikipedia

   en.wikipedia.org/wiki/Radiation

   Light, or visible light, is a very narrow range of electromagnetic radiation of a wavelength that is visible to the human eye, or 380–750 nm which equates to a frequency range of 790 to 400 THz respectively. [4] More broadly, physicists use the term "light" to mean electromagnetic radiation of all wavelengths, whether visible or not.

7. Crystal optics - Wikipedia

   en.wikipedia.org/wiki/Crystal_optics

   This causes a rotation of the principal axes of the medium and alters the behaviour of light travelling through it; the effect can be used to produce light modulators. In response to a magnetic field , some materials can have a dielectric tensor that is complex- Hermitian ; this is called a gyro-magnetic or magneto-optic effect .

8. These 89 Appetizers Might Just Be The Best Part Of ... - AOL

   www.aol.com/89-appetizers-might-just-best...

   Start off with something light before the heavier main event (hello, mashed potatoes!). This dip is so easy to make and comes together in minutes. This dip is so easy to make and comes together in ...

9. Optical spectrometer - Wikipedia

   en.wikipedia.org/wiki/Optical_spectrometer

   The wavelength of light is then selected by the slit on the upper right corner. An optical spectrometer (spectrophotometer, spectrograph or spectroscope) is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials. [1]