A Thread about Famous Armenian Inventors and what we have contributed to the world. So the next time someone wants to say we are unimportant, you can rest easy knowing Armenians have contributed some of the greatest inventions to mankind. Here is a handful but there's more.

Raymond Damadian: Armenian-American Physician and inventor of the first MRI machine. MRI is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body. Raymond created the first MRI in 1977.
Artem Mikoyan: One of the most famous engineers in aviation. Mikoyan along with Gurevich created one of the most famous Jet lines in history, the MiG. MiG jets directly competed with American Lockheed Martin F Series planes and were among the first to surpass the speed of sound.
Hovannes Adamian: Most notably laid the foundations of color television with his Tri-Color Principle. His work would go on to become the framework that is used to create Color-TV that we see today. He is recognized as one of the founders of color television.
Emik Avakian: An inventor who unfortunately was disabled, but that didn't stop him from contributing work that would help people similar to his condition. Notable contributions are the automatic wheelchair which dismiss the action of hand rolling and a breath operated typewriter.
Luther Simjian: An Armenian-American inventor and entrepreneur. Developed the first ever ATM Machine, Self-Posing Portrait Camera, and his version of a color x-ray machine. Created the original selfie and has patents for over 200 inventions. Modern banking owes him a lot.
Arthur H. Bulbulian: A pioneer of Armenian descent in the field of facial prosthetics. Credited with the creation of the A-14 oxygen mask for the United States Air Force in 1941. He also worked on the team that developed the BLB mask used widely in medical fields and aviation.
Oscar H. Banker (Asatour Sarafian): An engineering icon. Patented a number of works, including an automatic transmission for automobiles, the primary controls of the first Sikorsky helicopter, and power steering. He is considered by some as the "Father of Automatic Transmission."
Christopher Ter-Serobyan: A chemist who invented the green paint used for the United States dollar note that cannot be forged. In the 1860s, bills were normally colored in black and white which made creating counterfeit versions very easy. He made counterfeiting very difficult.
Michel Ter-Pogossian: A medical physicist, a professor of radiology, and a pioneer in nuclear medicine, he is best known for his research on the positron emission tomography (PET). He is considered one of its creators and often referred to as the "Father of PET."
Varaztad Kazanjian: An oral surgeon who pioneered techniques for plastic surgery and is considered to be the founder of the modern practice of plastic surgery. A WW1 Veteran he was also awarded the Honorary Award of the American Society of Plastic and Reconstructive Surgeons.
Giacomo Luigi Ciamician: An ingenious scientist whose work in organic chemistry and plant chemistry led him to found the field of organic photochemistry. He believed that the power of the sun could be harnessed as an energy source. One of the first pioneers of using solar power.
Alexander Kemurdzhian: a Soviet Armenian mechanical engineer who worked at the VNII Transmash institute for the most of the second half of the 20th century. He is best known for designing Lunokhod 1, the first ever planetary rover for space exploration.
Mesrop Mashtots: An early medieval Armenian linguist, composer, theologian, statesman and hymnologist. He is best known for inventing the Armenian alphabet c. 405 AD, which was a fundamental step in strengthening Armenian national identity.
Hampartsoum Limondjian: An Ottoman Armenian composer of Armenian church and classical music, as well as Ottoman classical music, and musical theorist who developed the "Hamparsum" notation system. Limondjian's notation became the dominant notation for Turkish and Armenian music.

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1/ Automobiles and Intake Fraction. Since cars are back in the news I thought I would retweet this model result I offered in early April 2020. I focused only on 1 micron particles & accounted for windows completely closed & cracked slightly open.


2/ Related air exchange rates were based on experimental results in literature for mid-sized sedans. Particle deposition to indoor surfaces were accounted for, as the surface to volume ratio in a 3 m3 cab is large. An important outcome was the intake fraction (IF)

3/ Here, IF is the number of particles (or virions in collective particles) inhaled by a receptor DIVIDED BY the number or particles (or virions in collective particles) emitted by an infector.

4/ Integrated over the two hour drive (in this example) the IF for all windows closed & a receptor at rest is 0.08 (8% of what comes out of the infectors respiratory system ends up in the respiratory system of the receptor). 8%! That is a very high intake factor.

5/ With additional ventilation from cracking a window open drops the IF to 0.012 (1.2%) still relatively high. Can get lower by opening more windows.

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