Dclikre
- Rechargeable Red Laser...Amazon.com$17.99
- MIPREZT Rechargeable...Amazon.com$17.99
- Cowjag Long Range Green ...Amazon.com$13.99
- DCLIKRE Green Laser...Amazon.com$17.49
- MIPREZT Rechargeable...Amazon.com$23.99
- Green Laser Pointer,...Amazon.com$9.99
- LUEIIN Long Range Laser...Amazon.com$12.99
- DCLIKRE Red Laser Pointer...Amazon.com$17.45
- YEHUOT Long Range...Amazon.com$17.99
- UNBIU Long Range Laser...Amazon.com$13.99
- Cowjag Laser Pointer High...Amazon.com$22.99
- Green Laser Pointer High...Amazon.com$9.99
- 4 Pack Rechargeable Green...Amazon.com$69.99
- Green Laser Pointer, Long...Amazon.com$26.99
- [2 Pack] Rechargeable...Amazon.com$29.99
- PREXISO Pocket Laser...Amazon.com$25.99
- Long Range Green Laser...Amazon.com$23.99
- Cardellini Green Laser...B&H Photo-Video-Pro Audio$111.73
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A laser pointer or laser pen is a (typically battery-powered) handheld device that uses a laser diode to emit a narrow low-power visible laser beam (i.e. coherent light) to highlight something of interest with a small bright colored spot.
Blue, direct diode semiconductor lasers can be built using inorganic gallium nitride (GaN) or InGaN gain medium, upon which many (dozens or more) layers of atoms are placed to form the active part of the laser that generates photons from quantum wells.
Laser engraving is the practice of using lasers to engrave an object. Laser marking, on the other hand, is a broader category of methods to leave marks on an object, which in some cases, also includes color change due to chemical/molecular alteration, charring, foaming, melting, ablation, and more.
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directional pad – a very simple keyboard. Dance pad – used to point at gross locations in space with feet. Soap mouse – a handheld, position-based pointing device based on existing wireless optical mouse technology. Laser pen – can be used in presentations as a pointing device.
Mechanical pencil mechanisms use only a single lead diameter. Some pencils, such as the Pentel Function 357, place several mechanisms within the same housing, so as to offer a range of thicknesses (in this case three: 0.3, 0.5 and 0.7 mm). 1.00 mm leads also exist, but they are very rare.
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