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Stage Light
Cai yi light of the basic knowledge and application in the stage lighting - handheld gps navigator
The nature of light Just means the source of the radiation part of the issue, which is able to produce visual radiation.
Based physics point of view, just a kind of electromagnetic wave, the wavelength range of 380-780mm range. This part of the electromagnetic wave can cause the human eye as the visual response, so called visible light.
The various electromagnetic waves by wavelength Expand: wavelength (nm)
Basic knowledge and in light Arena Lighting Application
Eye to visible light and color sense
Different wavelengths of light gives the color perception is different, as shown in Table 1. Increased from 380nm to 780nm wavelength, the light color from purple, beginning with the blue, blue, green, yellow, orange, red and gradually change the order. Between every two colors no clear boundaries, decreasing by a color, another color to the gradual increase in the transition. All visible light waves mixed with sunlight to form (white light).
Basic knowledge of light and lighting of the stage
Color characteristics There are three characteristics of color: brightness, hue and color saturation.
1, brightness: bright, light color from the color of light brightness level of the decision, the higher the brightness, the more people feel bright eyes. Surface reflection of light colored higher the rate of its brightness, the higher.
2, Hue: Hue is the color distinction between the characteristics of each other. Different wavelengths within the visible spectrum of radiation in the visual performance of a variety of colors such as red, orange, yellow, green and blue. The color depends on the light source spectral composition of light on the feelings generated by the human eye, while the color of objects depends on the spectral composition of light reflected from the surface (transmission) ratio of the various wavelengths of radiation produced by human eyes sense . For example, the sun shone only reflected in a range of 480-560nm wavelength radiation and other wavelengths of radiation absorbing leaves, the leaf surface on the green.
3, Saturation: Saturation is the purity of color. All the visible spectrum monochromatic light is the most saturated color. Spectrum incorporation Baiguang Cheng points, the more unsaturated, if the spectrum incorporation Baiguang Cheng points to a significant proportion of this time is no longer the color of light on color, and a white light was. Object color saturation, depending on the surface level of the selective reflection spectrum of radiation. Selective as possible, that is objects reflected the more narrow wavelength range of radiation, the higher the color saturation.
Red, orange, yellow, green, green, blue and purple colors are stage 7 Lighting Will be selected, the choice of color only to emphasize the brightness, color saturation, hue consistency requirements on a high, ± 5nm difference will be the human eye have a huge visual difference. On the base material temperature, pressure and membrane processing department also has special requirements, because high temperature glass thermal expansion coefficient and color shift are to stage Lighting Fatal flaw. Cai Yi Lighting Company under the three characteristics of color and the most famous lighting designers suggested that the choice of color film has a high-quality technical requirements. Yi currently selected color is the color of the Italian imports of films, it meets the conditions for R & D input, so that light output stability, uniform, bright, high color purity.
Wavelength greater than 780nm red light outside, known as infrared light or infrared; wavelengths less than 380nm light, the purple on the outside, known as UV or ultraviolet light, ultraviolet, and who watched less than infrared, but it can feel like can cause thermal infrared, and ultraviolet radiation can cause pain.
Stage lighting applications in the optical design most of reflection film with cold bowl, cold bowl of the visible light reflective film (EL) high reflectivity, infrared light (heat light) high, through the domestic production of cold light reflective film can be done generally bowl to: the average visible reflectivity: 93%, the average infrared light transmittance: 75%. After the infrared light through the reflective heat generated most of the bowl was taken away fans, but there must be a part of infrared light through the insulation film to be blocked, or excessive heat generated by IR light will damage the color of the previous films, pattern film, aperture, closed-rays, and even speed up the function of other effects of aging.
UV is harmful to human body, people encounter in their daily lives in strong sunlight, when UV light the skin will feel burning. Stage lighting design in the light path will also consider the use of optical lens coating to block UV wavelength 380nm the following.
High quality stage lighting projection of the light intensity is high, but it feels very soft light, no burning feeling; poor stage lighting into account the cost to pay, on the reflective bowl, optical lens not required, then the illumination of the projected light will people feel the burning, so will shorten the life of the lamp, or even result in disasters and accidents.
Light path design stage when the lights should not only consider the non-visible light filter, but also the efficiency of utilization of light. Here are some common unit of measurement of light.
1, radiation flux and flux Light source in unit time is called the total energy radiated from the light source radiation flux, in units of watts (W).
And radiation flux, but the corresponding physical quantity based on human vision known as the luminous flux, in units of lumens (Lumen), denoted by lm.
2, illumination When the light irradiation at a surface, the surface Jibei light, the surface brightness level of the irradiated light illumination to describe. Light intensity is defined by the surface per unit area according to the received flux. The units lux light intensity, denoted by lx. 1lx that the flux evenly 1lm 1m irradiation on the surface of the light intensity when that 1lx = 1lm / m
3, color temperature If a piece of iron is gradually heated, iron will be light, its luminous color with the color temperature will rise from the initial red to yellow, then yellow into white, and finally into a strong blue-green, which Description hot objects with its color temperature of light has a close relationship.
Hot objects to describe the temperature dependence of luminous color, people with hot bodies light color as the standard blackbody (black body is able to cast their radiation at all wavelengths are absorbed objects) heated to certain temperature when the hue of light compared to if they are the same color of light emitted, put the light color of black body temperature at the time set for the hot object light source color temperature, absolute temperature scale used to represent. For example, if a light source color and heat to the absolute temperature 4500K black body color of light emitted by the same, the light source color temperature is 4500K.
Color temperature of 2000K the light source
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How does chemiosmosis cause ADP to become phosphorylated during the light dependant stage of photosynthesis?
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On one side of the membrane (we will call this side the "inside") is a supply of hydrogen atoms. Special carrier molecules use the energy released in the electron transport chain to bring hydrogen atoms close to the membrane and separate the hydrogen into an H+ ions and electrons. The electrons are brought back to the inside of the membrane while the H+ ions are forced to the other side (the "outside"). As more and more H+ ions accumulate on the outside of the membrane, two gradients are formed. First, a pH gradient is formed. This means that the outside is more acidic (because it has H+ ions) than the inside of the membrane. Also, an electrical gradient forms, since H+ ions have a positive charge.
When these gradients become sufficiently intense, they force the H+ ions through a channel (sometimes called the F0 channel) in the membrane in a tremendous gush. The ions end up in a large structure called the F1 unit where an enzyme called ATP synthetase is located. Also present in the F1 are ADP molecules and phosphate molecules. As the H+ ions rush by, they provide the energy which brings the ATP synthetase, ADP, and phosphates together. The ATP synthetase bonds the ADP and phosphate molecules, forming ATP. The H+ ions, now on the inside of the membrane, can be transported by the carrier molecules across the membrane so that the process may be repeated when enough energy is released from the electron transport chain. = Chemiosmosis.
Photoshop Quick Tip 2 - Stage Lights