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A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word laser originated as an acronym for light amplification by stimulated emission of radiation.
Laser types with distinct laser lines are shown above the wavelength bar, while below are shown lasers that can emit in a wavelength range. The height of the lines and bars gives an indication of the maximal power/pulse energy commercially available, while the color codifies the type of laser material (see the figure description for details).
The term pro-choice entered currency after pro-life and was coined by those who supported legal abortion as a response to the success of the pro-life branding. [1] [4] The first use of the term cited by the Oxford English Dictionary is in a 1969 issue of the California daily newspaper the Oxnard Press-Courier, which referred to "Pro-choice and ...
Red (635 nm), blueish violet (445 nm), and green (520 nm) laser pointers. 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.
Albert Wynn and Gloria Feldt on the steps of the U.S. Supreme Court to rally for legal abortion on the anniversary of Roe v. Wade. The United States abortion-rights movement (also known as the pro-choice movement) is a sociopolitical movement in the United States supporting the view that a woman should have the legal right to an elective abortion, meaning the right to terminate her pregnancy ...
The Nira Pro Laser is currently 20 percent off, so here's how to snag the deal, plus why it's loved by our beauty editor for acne scars, wrinkles, and more.
A laser warning symbol. Laser radiation safety is the safe design, use and implementation of lasers to minimize the risk of laser accidents, especially those involving eye injuries. Since even relatively small amounts of laser light can lead to permanent eye injuries, the sale and usage of lasers is typically subject to government regulations.
This Financial Choice Will Define Your 2025, According to Jade Warshaw. J. Arky. January 12, 2025 at 6:00 PM. BartekSzewczyk / iStock/Getty Images.