This bright and dark stripes appear, is the "light interference phenomenon." Is not a casual encounter can produce two beams of light interference phenomenon? Not. Only two waves of identical frequency, vibration direction they are the same, but the pace of their vibrations always maintained an established relationship (known as optical "phase constant"), the order to produce interference. Ordinary light sources emit light of different points, even if the same frequency (for example, with a 30W fluorescent lamp), in the same direction, but in the "phase" can not maintain the established relationship, it still can not coherent. Coherence of the laser with the laser is monochromatic, directional closely related. Monochromatic and directional light the better, it's certainly better coherence. 200mW Laser Pointer has the traditional pointing function.We can use this laser coherence, energy convergence in the space of its very small area, so a very small laser can gather a tremendous energy, which is used to trigger thermonuclear fusion. If the nuclear fuel made of sesame seeds smaller than the small solid micro-spheres, and then use the laser as an ignition to light it, you can make mini-ball heated to 100 million degrees of heat, it produces high energy density per cc 1 petajoules. Such a high energy density, the equivalent of tens of tons of explosives concentrated in one cubic meter of volume energy density generated by the blast, which reached the atomic bomb explosion, the resulting high energy density of the order of magnitude. The successful application of holographic laser is an example of coherence.100mW laser pointer can also turn pages of the PPT. After the laser beam unit is divided into two beams, a beam of light shines directly on the film, called "reference beam"; another beam of light reflected through the object to be photographed and then shines on the film, called "material beam." Two beams of light to form interference fringes in the film, this is the hologram photosensitive film. Hologram is not only vivid, three-dimensional sense of strong, particularly amazing is looking at hologram the viewer a different perspective on change, you will see photos of different locations in the scene. Even more amazing is that a hologram has been damaged even though most, only a corner, still can reproduce all the features. However be noted that these four characteristics is generally on the overall laser light compared with the general terms. In fact, in practical applications of the four features are made without high demands.10mW blue violet laser pointer can also turn pages of the PPT by pressing the buttons on it. For example: The main requirement is that holographic monochromatic and coherent nature of good; laser communications major requirement is directional, monochromatic and coherent nature of good; laser rangefinder main requirement is a good direction, and high brightness; laser weapons are the main requirements high brightness and good direction, and so on. Application of different purposes, it should be used or developed different characteristics of lasers. Although many unique and excellent laser performance, but it can not completely replace all of the ordinary light, such as laser lighting a large area does not apply. CD player and CD player and CD laser laser application technology is the most successful contemporary masterpiece. CD player and CD called "CD player" or "CD album."green laster pointer can remote control the computer in a wireless way. CD English compact disc - Digital audio acronym, meaning small digital audio recording. Compared with the traditional player, CD player with many incomparable advantages: to provide excellent high-fidelity, high-purity quality; left and right stereo channel separation of 85 dB, frequency response to 20,000 in 5 weeks (Hz) between , harmonic distortion there is no problem wow flutter rate, long-life record, almost never wear, the dynamic range of more than 90 decibels, close to large dynamic range of the symphony orchestra.
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