Mell Who discovered infrared and ultraviolet?
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.
Who discovered infrared wavelength?
astronomer Sir William Herschel
Most encyclopedias and physics books credit the great British astronomer Sir William Herschel with the discovery of infrared radiation in 1800.
Who discovered infrared radiation How did they discover it?
Herschel discovered the existence of infrared light by passing sunlight through a glass prism in an experiment similar to the one we describe here. As sunlight passed through the prism, it was dispersed into a rainbow of colors called a spectrum. A spectrum contains all the visible colors that make up sunlight.
Who discovered the light spectrum?
In the year 1800, Sir William Herschel was exploring the question of how much heat was contained by the different colors of visible light. He devised and experiment where he used a glass prism to separate sunlight into it’s rainbow of colors.
How was the existence of ultraviolet light proven?
DISCOVERY OF ULTRAVIOLET Knowing that photographic paper would turn black more rapidly in blue light than in red light, he exposed the paper to light beyond violet. Sure enough, the paper turned black, proving the existence of ultraviolet light.
Is infrared waves harmful to humans?
IR, particularly IR-A or near IR [700nm-1400nm], raises the internal temperature of the eye, essentially “baking” it. Medical studies indicate that prolonged IR exposure can lead to lens, cornea and retina damage, including cataracts, corneal ulcers and retinal burns, respectively.
Who was the first person to discover ultraviolet light?
Answer Wiki. Johann Ritter is best known for his discovery of ultraviolet light in 1801. William Herschel discovered infrared light . This was the first time that a form of light beyond visible light had been detected.
How did Ritter discover infrared and ultraviolet rays?
Ritter had discovered radiation beyond violet (ultraviolet) just as Herschel had discovered that radiation existed below the red end of the visible spectrum (infrared). A TV remote control uses infrared light to adjust the volume or change the channel.
Who was the first person to discover infrared light?
William Herschel discovered infrared light . This was the first time that a form of light beyond visible light had been detected.
When did Herschel discover infrared and ultraviolet rays?
In 1801, Ritter read about Herschel’s discovery of infrared radiation. Ritter had worked on sunlight’s effect on chemical reactions and with electrochemistry (the effect of electrical currents on chemicals and on chemical reactions).