X-Nico

5 unusual facts about Visible spectrum


Archaeamphora

These structures exhibited strong yellow-green intrinsic fluorescence when exposed to visible light with a wavelength of 500 nm (blue-green).

Atomic battery

; Thermophotovoltaic cells: Thermophotovoltaic cells work by the same principles as a photovoltaic cell, except that they convert infrared light (rather than visible light) emitted by a hot surface, into electricity.

Heating element

Radiative heating elements (heat lamps): A high-powered incandescent lamp usually run at less than maximum power to radiate mostly infrared instead of visible light.

Path length

In chemistry, the path length is defined as the distance that light (UV/VIS) travels through a sample in an analytical cell.

Visible spectrum

In the early 19th century, the concept of the visible spectrum became more definite, as light outside the visible range was discovered and characterized by William Herschel (infrared) and Johann Wilhelm Ritter (ultraviolet), Thomas Young, Thomas Johann Seebeck, and others.


Greater Blue Mountains Area

The area is called "Blue Mountains" based on the fact that when atmospheric temperature rise, the essential oil of various Eucalyptus species evaporates and disperse in the air, then visible blue spectrum of sunlight propagates more than other colours.

Woodward's rules

Woodward's rules, named after Robert Burns Woodward and also known as Woodward–Fieser rules (for Louis Fieser) are several sets of empirically derived rules which attempt to predict the wavelength of the absorption maximum (λmax) in an ultraviolet–visible spectrum of a given compound.


see also