City Pedia Web Search

Search results

1. Results From The WOW.Com Content Network

2. Electromagnetic spectrum - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_spectrum

   Electromagnetic spectrum. The electromagnetic spectrum is the full range of electromagnetic radiation, organized by frequency or wavelength. The spectrum is divided into separate bands, with different names for the electromagnetic waves within each band. From low to high frequency these are: radio waves, microwaves, infrared, visible light ...

3. Blacklight - Wikipedia

   en.wikipedia.org/wiki/Blacklight

   Blacklight. Blacklight fluorescent tubes. The violet glow of a blacklight is not the UV light itself, but visible light that escapes being filtered out by the filter material in the glass envelope. A blacklight, also called a UV-A light, Wood's lamp, or ultraviolet light, is a lamp that emits long-wave ( UV-A) ultraviolet light and very little ...

4. Redshift - Wikipedia

   en.wikipedia.org/wiki/Redshift

   In physics, a redshift is an increase in the wavelength, and corresponding decrease in the frequency and photon energy, of electromagnetic radiation (such as light ). The opposite change, a decrease in wavelength and increase in frequency and energy, is known as a blueshift, or negative redshift. The terms derive from the colours red and blue ...

5. Bili light - Wikipedia

   en.wikipedia.org/wiki/Bili_light

   A bili light [1] [2] is a light therapy tool to treat newborn jaundice ( hyperbilirubinemia ). High levels of bilirubin can cause brain damage ( kernicterus ), leading to cerebral palsy, auditory neuropathy, gaze abnormalities and dental enamel hypoplasia. The therapy uses a blue light (420–470 nm) that converts bilirubin into an (E,Z)-isomer ...

6. Blue law - Wikipedia

   en.wikipedia.org/wiki/Blue_law

   Blue laws, also known as Sunday laws, Sunday trade laws, and Sunday closing laws, are laws restricting or banning certain activities on specified days, usually Sundays in the western world. The laws were adopted originally for religious reasons, specifically to promote the observance of the Christian day of worship, but since then have come to ...

7. Light blue - Wikipedia

   en.wikipedia.org/wiki/Light_blue

   Light blue is a color or range of colors, typically a lightened shade with a hue between cyan and blue . The first use of "light blue" as a color term in English is in the year 1915. [2] In Russian and some other languages, there is no single word for blue, but rather different words for light blue ( голубой, goluboy) and dark blue ...

8. Strobe light - Wikipedia

   en.wikipedia.org/wiki/Strobe_light

   Strobe light. A strobe light or stroboscopic lamp, commonly called a strobe, is a device used to produce regular flashes of light. It is one of a number of devices that can be used as a stroboscope. The word originated from the Ancient Greek στρόβος ( stróbos ), meaning "act of whirling".

9. Color mixing - Wikipedia

   en.wikipedia.org/wiki/Color_mixing

   For practical additive color models, an equal superposition of all primaries results in neutral (gray or white). In the RGB model, an equal mixture of red and green is yellow, an equal mixture of green and blue is cyan and an equal mixture of blue and red is magenta. [1] : 4.2 Yellow, cyan and magenta are the secondary colors of the RGB model.