Tag: science & technology

Jagadish Chandra (J.C.) Bose became the first Indian to be honored by the Royal Society when he was elected a Fellow in 1920 for his pioneering work in radio and plant physiology. C.V. Raman was elected later in 1924, though he won the Nobel before that. Homi J. Bhabha was elected in 1941.

Norman Gilbert Pritchard, an Anglo-Indian athlete, was the first Indian to participate in the Olympic Games at Paris 1900. He won two silver medals in athletics (200m hurdles and 200m sprint). This was before India's independence and the modern Olympic movement's formalization in India. P.T. Usha competed much later (1980s).

Sirius is the brightest star in the night sky with an apparent magnitude of -1.46. Castor is a star in Gemini but much fainter, and "Jih" is not a recognized star name.

The average distance from Earth to Moon's center is about 384,400 km. This varies between 363,300 km at perigee and 405,500 km at apogee due to elliptical orbit. 1 light year is vastly larger, and other values are incorrect.

The Moon takes about 27.3 days to complete one orbit around Earth relative to fixed stars (sidereal month). A synodic month (new moon to new moon) is 29.5 days. 24 hrs is Earth's rotation, not lunar orbit.

During full moon, the Moon is on the opposite side of Earth from the Sun, forming a roughly 180° angle. At 90°, we see half-moon (quarter phase). 360° would bring it back to new moon position.

Moon's gravity is about 1/6th of Earth's gravity (1.6 m/s² vs 9.8 m/s²). So a 60 kg person on Earth would weigh about 10 kg on Moon. 100 kg would be heavier than on Earth, 36 kg is incorrect.

Saturn V was the massive rocket that launched Apollo 11, carrying astronauts to the Moon in 1969. Ariane is a European rocket family, Discovery was a space shuttle, Sputnik was a Soviet satellite.

Chandrayaan-1 took approximately 3-4 weeks to reach and stabilize in Moon's orbit. The journey involved multiple orbit-raising maneuvers. 51 days is too long, 24 hrs and 7 days are too short for the complex journey.

GUID stands for Globally Unique Identifier, a 128-bit number used to uniquely identify resources in software systems. It's not related to graphical user interfaces or the internet directly.