As much as we know today about the planets of the solar system, it’s almost incomprehensible that a mere 50 years ago we knew almost nothing about them. Observations of even Mars and Venus, Earth’s closest planetary neighbors, through Earth-based telescopes had provided only the most rudimentary information on their physical characteristics and essentially no information on the chemical properties of the planets and their atmospheres.
Lasers & Electrooptics
![Mariner 6 and 7 spacecraft](/sites/default/files/styles/landmark_node_/public/2018-03/Mariner_6-7.png?itok=2_h_jWHo)
YearAdded:
Image Caption: Mariner 6 and 7
2017
![](/sites/default/files/styles/landmark_node_/public/landmarks/images/Laser.jpg?itok=yySWUkAc)
As ideas developed, they abandoned infrared radiation to instead concentrate upon visible light. The concept originally was called an "optical maser". In 1958, Bell Labs filed a patent application for their proposed optical maser; and Schawlow and Townes submitted a manuscript of their theoretical calculations to the Physical Review, published that year in Volume 112, Issue No. 6.
Simultaneously, at Columbia University, graduate student Gordon Gould was working on a doctoral thesis about the energy levels of excited thallium.
Innovations
![](/sites/default/files/styles/thumbnail/public/landmarks/images/Laser.jpg?itok=5JGL2WsM)
As ideas developed, they abandoned infrared radiation to instead concentrate upon visible light. The concept originally was called an "optical maser". In 1958, Bell Labs filed a patent application for their proposed optical maser; and Schawlow and Townes submitted a manuscript of their theoretical… Read More
![Mariner 6 and 7 spacecraft](/sites/default/files/styles/thumbnail/public/2018-03/Mariner_6-7.png?itok=dLJnZntt)
As much as we know today about the planets of the solar system, it’s almost incomprehensible that a mere 50 years ago we knew almost nothing about them. Observations of even Mars and Venus, Earth’s closest planetary neighbors, through Earth-based telescopes had provided only the most rudimentary…
Read More