[David Prutchi] has just shared his incredible work on making his own shortwave ultraviolet viewers for imaging entirely outside of the normal visible spectrum – in other words, seeing the truly ...

Since the whole idea of ‘visible light’ pertains to a small fragment of the electromagnetic (EM) spectrum ... as it requires a laser light to illuminate the holographic film from behind ...

fire a laser at them. It doesn't produce the kind of beam you can see. It uses part of the infrared spectrum at frequencies just below the visible spectrum more commonly associated with heat.

How can we measure visible light? The electromagnetic spectrum includes all forms of light energy, known as electromagnetic radiation. (1) Different types of electromagnetic radiation such as radio ...

Blue lasers, lasers that emit a light beam with a wavelength between 400 nm and 500 nm, are key components of various technologies, ranging from high-resolution displays to printers, medical imaging ...

The fact that laser light is monochromatic (narrowband ... designed optical fibres to create light with a wide spectrum that can span the visible and near-infrared, typically from around 400 ...

In an advance for the control and manipulation of light, researchers from the University of Ottawa have demonstrated a laser beam casting a visible shadow. Led by Jeff Lundeen, Associate Professor in ...