Isaac Newton discovered that white light is made up of seven different colors when he passed sunlight through a glass prism.
Sir Isaac Newton
The light year was not discovered. It was made up, by people who kept coming up with distances like [ 25,866,280,000,000 miles ] in their work, and soon realized that they were going to need something bigger than a mile, so they invented the light-year.
he discovered that light has 7 colours
oh i thought you ment why does a shadow appear when you stand in front of a light source
The light year was not discovered. It was made up, by people who kept coming up with distances like [ 25,866,280,000,000 miles ] in their work, and soon realized that they were going to need something bigger than a mile, so they invented the light-year.
Sir W. Crookes discovered the Properties of Light in 1879.
UV Light was discovered by Johann Wilhelm Ritter, in 1801
Sir Isaac Newton discovered that white light was made of seven different colors in the 17th century. He was able to prove that when some of the white light from the sun passes through a prism shaped piece of glass, the light scatters into a spectrum, which is a spectrum of what we know as the rainbow.
The light bulb was not something that existed and had to be discovered. It was a new thing that was invented.
Sir Frederick William Herschel discovered infrared light in an experiment to measure the temperature of different frequencies of light.
Nobody made the primary colors (red, yellow, and blue); they occur naturally on the light spectrum. Therefore, they were discovered- not made.