What did Johann Ritter discover?
On 22 February 1801, Johann Wilhelm Ritter discovered UV radiation in Jena. In general, this achievement is less well known than his work on galvanism. Ritter was the creator of modern electrochemistry.
Why is Johann Wilhelm Ritter famous?
Johann Wilhelm Ritter, (born December 16, 1776, Samitz bei Haynau, Silesia [now Zamienice, Poland]—died January 23, 1810, Munich), German physicist who discovered the ultraviolet region of the spectrum and thus helped broaden humanity’s view beyond the narrow region of visible light to encompass the entire …
How did Johann Wilhelm Ritter discovered ultraviolet?
Ultraviolet light was discovered by Johann Wilhelm Ritter in 1801 when he noticed that invisible light beyond the optical region of the electromagnetic spectrum darkened silver chloride. He split sunlight using a prism and then measured the relative darkening of the chemical as a function of wavelength.
How old was Johann Wilhelm Ritter when he died?
33 years (1776–1810)
Johann Wilhelm Ritter/Age at death
Is ultraviolet harmful?
UV exposure increases the risk of potentially blinding eye diseases, if eye protection is not used. Overexposure to UV radiation can lead to serious health issues, including cancer. Skin cancer is the most common cancer in the United States.
Who created UV light?
Johann Ritter
Johann Ritter is best known for his discovery of ultraviolet light in 1801. A year earlier, in 1800, William Herschel discovered infrared light. This was the first time that a form of light beyond visible light had been detected.
How do you pronounce Johann Wilhelm Ritter?
Starts here4:03Johann Wilhelm Ritter – YouTubeYouTube
Where is UV light found?
the Sun
UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun. It is also produced by electric arcs and specialized lights, such as mercury-vapor lamps, tanning lamps, and black lights.
Is ultraviolet radiation visible or invisible?
Ultraviolet (UV) light has shorter wavelengths than visible light. Although UV waves are invisible to the human eye, some insects, such as bumblebees, can see them.
How many colors are there in the spectrum?
COLOUR SPECTRUM Most people can see only seven distinct colours in the spectrum: red, orange, yellow, green, blue, indigo, and violet. Just as a prism can split white light into different colours, so lights of different colour can be added together to make white light.