who discovered infrared waves in the electromagnetic spectrum
Infrared Infrared was discovered in 1800 by astronomer Sir William Herschel, who discovered a type of invisible radiation in the spectrum lower in energy than red light, by means of its effect on a thermometer.[6] Slightly more than half of the total energy from the Sun was eventually found to arrive on Earth in the form of infrared. The balance between absorbed and emitted infrared radiation has a critical effect on Earth's climate.
André-Marie Ampère André-Marie Ampère (/ˈæmpɪər/;[1] French: [ɑ̃pɛʁ]; 20 January 1775 – 10 June 1836)[2] was a French physicist and mathematician who was one of the founders of the science of classical electromagnetism, which he referred to as "electrodynamics". He is also the inventor of numerous applications, such as the solenoid (a term coined by him) and the electrical telegraph. An autodidact, Ampère was a member of the Académie des sciences and professor at the École polytechnique and the Collège de France.