Wednesday, March 31, 2021
Tuesday, March 30, 2021
Monday, March 29, 2021
Saturday, March 27, 2021
Tuesday, March 23, 2021
SCIENCE WATCH
This Day in #Physics History ---
On this day in 1916, Albert Einstein's #Theory_of_General_Relativity was published as an academic paper in #Annalen_der_Physik 49, 769, titled “Die Grundlagen der allgemeinen Relativitästheorie.” This theory accounted for the slow rotation of the elliptical path of the planet #Mercury, which #Newtonian_gravitational_theory failed to do.
Fame and recognition came suddenly in 1919, when the Royal Society of London photographed the solar eclipse and publicly verified Einstein's general theory of relativity.
In 1921, #Albert_Einstein was awarded the Nobel Prize for Physics for his photoelectric law and work in the field of theoretical physics, but such was the controversy still aroused by this theories on relativity that these were not specified in the text of the award.
Now you can read the same article on Instagram https://www.instagram.com/cosmological_astrophysics
Monday, March 22, 2021
Sunday, March 21, 2021
FASCINATING FACTS : LARGEST TREE IN THE WORLD
LARGEST TREE IN THE WORLD
Location : Giant Forest of Sequoia National Park in Tulare County, California, USA.
The General Sherman Tree is the world's largest tree, measured by volume. It stands 275 feet (83 m) tall, and is over 36 feet (11 m) in diameter at the base. Sequoia trunks remain wide high up. Sixty feet above the base, the Sherman Tree is 17.5 feet (5.3 m) in diameter.
It is estimated to be around 2,300 to 2,700 years old.
Saturday, March 20, 2021
SCIENCE WATCH
The Positive Electron: 88 years ago Carl Anderson's discovery of the positron was published #OnThisDay in 1933.
In developing quantum mechanical theory, Paul Dirac predicted that all matter has a kind of mirror image - antimatter. A particle and its antiparticle, if charged, should have opposite charges. By studying the tracks of cosmic ray particles in a cloud chamber, Anderson discovered a positively-charged particle with a mass seemingly equal to that of an electron, in 1932, Anderson's particle was the first antiparticle proven by experiment and was named a "positron".
Anderson was awarded the Nobel Prize in Physics in 1936.
Image: Cloud chamber photograph by Anderson, the first positron ever observed. A 6 mm lead plate separates the upper and lower halves of the chamber. The deflection and direction of the particle's ion trail indicate the particle is a positron.
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