Wikipedia
Pyrotechnic composition - A pyrotechnic composition is a substance or mixture of substances designed to produce an effect by heat, light, sound, gas or smoke or a combination of these, as a result of non-detonative self-sustaining exothermic chemical reactions. Pyrotechnic substances do not rely on oxygen from external..
Pyrotechnic composition - A pyrotechnic composition is a substance or mixture of substances designed to produce an effect by heat, light, sound, gas or smoke or a combination of these, as a result of non-detonative self-sustaining exothermic chemical reactions. Pyrotechnic substances do not rely on oxygen from external..
TutorVista
The Planets
Planets are the largest objects in the solar system except for the sun. Unlike the sun, the planets do not produce their own energy. They reflect the heat and visible light produced by the sun. The four planets near the Sun - Mercury, Venus, Earth and Mars are called terrestrial (ea..
Plant Tissue Culture
) which is activated to grow into separate organism by suitable mixture of cytokinins and auxins. The success in tissue culture depends upon a) the precision and length of asceptic condition b) source of explants c) compositions and concentrations of nutrients media d) time and dosage of ..
The Planets
Planets are the largest objects in the solar system except for the sun. Unlike the sun, the planets do not produce their own energy. They reflect the heat and visible light produced by the sun. The four planets near the Sun - Mercury, Venus, Earth and Mars are called terrestrial (earth-li..
Planets are the largest objects in the solar system except for the sun. Unlike the sun, the planets do not produce their own energy. They reflect the heat and visible light produced by the sun. The four planets near the Sun - Mercury, Venus, Earth and Mars are called terrestrial (earth-li..High temperature pyrolysis
In this process, coal is heated in the absence of air to about 1273 - 1473 K. The major products of high temperature pyrolysis are, Coal..
In this process, coal is heated in the absence of air to about 1273 - 1473 K. The major products of high temperature pyrolysis are, Coal.. Science Daily
Innovative Composite Opens Terahertz Frequencies To Many Applications - ScienceDaily (Apr. 16, 2008) — A frequency-agile metamaterial that for the first time can be tuned over a range of frequencies in the so-called 'terahertz gap' has been engineered by a team of researchers from Boston College, Los Alamos National Laboratory and Boston University. See also: Matter & Energy Materials Science Optics Medical Technology Physics Weapons Technology Detectors Reference Microwave Electromagnetic spectrum Infrared Radiant energy The team incorporated semiconducting materials in critical regions of tiny elements -- in this case metallic split-ring resonators -- that interact with light in order to tune metamaterials beyond their fixed point on the electromagnetic spectrum, an advance that opens these novel devices to a broader array of uses, according to findings published in the online version of the journal Nature Photonics. 'Metamaterials no longer need to be constructed only out of metallic components,' said Boston College Physicist Willie J. Padilla, the pr....
Innovative Composite Opens Terahertz Frequencies To Many Applications - ScienceDaily (Apr. 16, 2008) — A frequency-agile metamaterial that for the first time can be tuned over a range of frequencies in the so-called 'terahertz gap' has been engineered by a team of researchers from Boston College, Los Alamos National Laboratory and Boston University. See Also: Matter & Energy Materials Science Optics Medical Technology Physics Weapons Technology Detectors Reference Microwave Electromagnetic spectrum Infrared Radiant energy The team incorporated semiconducting materials in critical regions of tiny elements -- in this case metallic split-ring resonators -- that interact with light in order to tune metamaterials beyond their fixed point on the electromagnetic spectrum, an advance that opens these novel devices to a broader array of uses, according to findings published in the online version of the journal Nature Photonics. 'Metamaterials no longer need to be constructed only out of metallic components,' said Boston College Physicist Willie J. Padilla, the pr....
Shakespeare Composite:: Light Pole Installation ComparisonDemonstrating the many benefits of these direct burial light poles, this video was successfully directed to contractors and architects. We write, storyboard, shoot, edit and deliver quality targeted messages efficiently.
Spitzer & Hubble composite images + Sun Ra 'Lights on a Satellite'Spitzer & Hubble space telescope composite images set to the music of Sun-Ra Arkestra, 'Lights on a Satellite'. 'If you find earth boring, Just the same old same thing, Come on sign up, With Outer Spaceways Incorporated' - Sun Ra The light of the future casts the shadows of tomorrow. - Sun Ra For more space traveling, visit www.MIQEL.com
Question : it has two properties wave and also matter
it gains mass as it gains speed but has no mass when at rest
maybe the wave nature can pass thru it
but how can a body having mass actually penetrate through a solid glass
Answer : Matter isn't really solid, as researchers working with alpha particles found in the early 20th century. But you've got two misconceptions here: 1. Photons have no rest mass. They are pure energy. A high-energy muon may zip through glass with a very low probability of being stopped, but photons can't interact via any of the nuclear forces. 2. The reason visible photons can go through glass is because glass's electrons are tightly bound. It takes more energy than the photon has to kick an electron to a higher open energy state, so the absorption doesn't happen. If you change the photon wavelength (soda glass gets opaque in both the far infrared and UV) or the composition of the glass (obsidian instead of quartz), you'll see photons absorbed rather than transmitted. U V: Light slows down in glass because the electron density increases the permittivity to a value considerably greater than the free-space value, 0. The speed of light in free space is determined by ..
Answer : Matter isn't really solid, as researchers working with alpha particles found in the early 20th century. But you've got two misconceptions here: 1. Photons have no rest mass. They are pure energy. A high-energy muon may zip through glass with a very low probability of being stopped, but photons can't interact via any of the nuclear forces. 2. The reason visible photons can go through glass is because glass's electrons are tightly bound. It takes more energy than the photon has to kick an electron to a higher open energy state, so the absorption doesn't happen. If you change the photon wavelength (soda glass gets opaque in both the far infrared and UV) or the composition of the glass (obsidian instead of quartz), you'll see photons absorbed rather than transmitted. U V: Light slows down in glass because the electron density increases the permittivity to a value considerably greater than the free-space value, 0. The speed of light in free space is determined by ..
Question : I spend alot of time staring at my plants, I was wondering if different color spectrums of light were harmful to human eyes.
Answer : Staring at plants is probably more harmful than the light spectrum. Find better uses of your time. HPS does have a very narrow spectral composition, so it's more likely to have an effect. But it has been used for efficient street lighting that's easy for an observatory to filter out to ameliorate the effect of light pollution. I don't know of any reported or claimed harm from this. It makes you more susceptible to SAD (seasonal affective disorder).
Answer : Staring at plants is probably more harmful than the light spectrum. Find better uses of your time. HPS does have a very narrow spectral composition, so it's more likely to have an effect. But it has been used for efficient street lighting that's easy for an observatory to filter out to ameliorate the effect of light pollution. I don't know of any reported or claimed harm from this. It makes you more susceptible to SAD (seasonal affective disorder).