Sir William Crookes was an English chemist and physicist who attended the Royal College of Chemistry in London, and worked on spectroscopy. He was a pioneer of vacuum tubes, inventing the Crookes tube which was made in 1875. Crookes was the inventor of the Crookes radiometer which today is made and sold as a novelty item.

John Dalton was an English chemist and physicist. He is best known for his magnificent work in the development of modern atomic theory; and his research into color blindness, sometimes also referred to as Daltonism.

3 POINTS

created by Ms. Ngo

3 POINTS

They take Nitrogen from Nitrates in the soil and then release it into the air so it doesn’t all go to the ocean.