Infared Printer... Source: Intro to Computer Txt Book
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A printer that communicates with a device using light waves is a laser printer. Laser printers use a laser beam to create an electrostatic image on a drum, which is then transferred and fused onto paper to produce the final printout.
"RF" on a light typically stands for "radio frequency," indicating that the light can be controlled wirelessly using a remote or a smart device.
A device that produces light of only one color is called a monochromatic light source. This can be achieved using devices like lasers, LEDs (Light Emitting Diodes), or filters to isolate a specific wavelength of light.
Light intensity is measured using a device called a light meter, which detects the amount of light in a given area. Common methods include using a digital light meter, a lux meter, or a spectrophotometer to measure light intensity in units such as lux or lumens.
A photonic microphone is a device that can convert sound energy into light energy. This technology detects sound waves and converts them into light signals using photonic integrated circuits.
The wavelength of a light wave is typically measured using a device called a spectrophotometer or a spectrometer. These devices split the light into various wavelengths and measure them with detectors to determine the exact wavelength of the light wave. Wavelength can also be measured indirectly using the speed of light equation, where wavelength = speed of light / frequency.