How to measure accurate laser pointer power
Use a laser pointer worth 50 euros to illuminate the balloon and light the balloon in one minute. A total of three minutes of irradiation white burns. The laser pointer has a certain lethality. The higher the value, the higher the lethality of the laser pointer. Green lasers are very popular these days, especially by astronomers and astronomers. The green laser emits a light beam with a wavelength of 532 nanometers, and the red laser emits a light beam with a wavelength of 630 nanometers. As you may know, green lasers are much more powerful and are generally classified as Class 3a lasers in the United States because they measure less than 5 milliwatts. However, please pay attention to label permissions. According to a test conducted by the National Institute of Standards and Technology (NIST) in 2013, if 44% of the green and red high powered laser beams tested (122 laser tests in total) do not meet federal safety standards, about 90%. Even more worrying is that nearly half of the test pointers emit light beams that are twice the limit set by federal regulations. We take products and transparency seriously. Therefore, test each laser with a power meter to create a series of videos.
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Contrasting aiming with the naked eye, the recommended appearance of the laser pointer does not require gestures to explain places where people are hardly pointing, and the light is enough to point them clearly. Stars and celestial bodies. While pointing the celestial body to the sky, you can observe it alone with a green laser pointer on a sunny day. If you want to learn astronomy or teach astronomy, you will need a green laser pointer with output. In addition, when the beam is well scattered in the atmosphere and the visibility of the atmosphere is poor, such as dense fog and severe pollution, a high-power green laser pointer is required. The light beam in the night sky is so bright, you can feel it touching the stars with your naked eyes.
2021-12-24 08:52:09
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