Raviranjan Kumar 🇮🇳 @Theraviranjankr@qoto.org

Today, I’ve completed another revolution around our G-type main sequence star (GV-2)! Cheers to a happy and healthy orbit ahead. The Earth's rotation made this day even more special.

#HappyBirthdaytoMe

The beauty of Physics ❤️
Original source: https://youtu.be/pdm0e_Uexqc?si=zP_hVAkvCOz5yyzF

ISRO launches India's first solar mission, #AdityaL1 from Satish Dhawan Space Centre.
https://twitter.com/ANI/status/1697857372495233078/video/1

Germany is home to over 20,000 castles. The most famous castle in Germany is Neuschwanstein Castle, which is located in Bavaria.

In a video taken aboard the International Space Station (ISS), astronaut Scott Kelly can be seen extracting a floating ball of water from a tank. He then adds a few drops of food dye to the water, turning it green. Finally, he drops an effervescent tablet into the water, causing the ball to bubble and fizz as the tablet dissolves. The gas bubbles cause the water to deform and move around, creating an amazing visual effect.

Link to the 4K video: https://www.youtube.com/watch?v=bKk_7NIKY3Y

10 years ago, Astronaut Chris Cassidy shaved his head to welcome bald-headed crewmate Luca Parmitano to the ISS
Source of video: https://youtu.be/Ywh035K0NZc?si=yrLoIg7rt8GhO1LP

RT @stats_feed: Orbital rocket launches in 2023 (success / failure):

Cape Canaveral: 34 / 1
Jiuquan: 22 / 0
Vandenberg: 17 / 0
Kennedy: 9 / 0
Xichang: 8 / 0
Taiyuan: 7 / 0
Baikonur: 6 / 0
Satish Dhawan: 6 / 0
Mahia: 5 / 0
MARS: 3 / 0
Plesetsk: 3 / 0
Vostochny: 3 / 0
Kourou: 2 / 0
Sohae: 0 / 2
Tanegashima: 1 / 1
Wenchang: 2 / 0
Cornwall: 0 / 1
Naro: 1 / 0
PSCA: 0 / 1
Palmachim: 1 / 0
Starbase: 0 / 1*

*successful failure

A robot that could cover half a kilometre per jump on the moon may be the ideal lunar exploration vehicle.

📹Source: https://youtube.com/watch?v=m3lKYtG6098&si=RyXzMwvBSjNsiQLN

The Story of How Imaginary Numbers Were Invented?

Mathematics arose as a practical tool to quantify the world but faced an unsolvable problem. To solve it, mathematicians divorced math from reality, inventing imaginary numbers.

Read here:
[https://theraviranjankr.online/how-imaginary-numbers-were-invented/]

In the picture, the black ball is moving in a straight line in the inertial frame of reference (upper part of the picture). However, the observer (red dot) who is standing in the rotating/non-inertial frame of reference (lower part of the picture) sees the object as following a curved path. This is because the observer is also rotating, and the Coriolis and centrifugal forces are acting on the object.
#Physics #Coriolisforce #centrifugalforce

A recent survey by Nature found that over half of scientists have reduced their time on Twitter in the past six months, and 7% have stopped using it altogether. The survey also found that 46% of scientists have joined other social-media platforms, such as Mastodon, Bluesky, Threads and TikTok.
[Read more: https://www.nature.com/articles/d41586-023-02554-0]

“Geometry has two great treasures: one is the theorem of Pythagoras, the other the division of a line into extreme and mean ratio. The first we may compare to a mass of gold, the second we may call a precious jewel.”

- Kepler

#mathematics

Polar bears are nearly undetectable by infrared cameras because their fur and blubber reflect heat back into their bodies.

[Read more:https://asknature.org/strategy/fur-absorbs-infrared-radiation-to-prevent-heat-loss/]

Head of Portugal's first serial killer, Diogo Alves, has been kept in a jar for 181 years. It was treated with alcohol, arsenic, and wax to prevent decay. The head is a popular tourist attraction & teaching tool for med students.

[Read more:https://www.atlasobscura.com/places/preserved-head-of-diogo-alves]

A soccer ball signed by schoolchildren survived the 1986 Challenger explosion & was found floating in the Atlantic Ocean. It's now on display at Clear Lake HS in Houston, TX

Read more [https://interestingengineering.com/the-story-of-the-soccer-ball-that-survived-the-1986-challenger-explosion]

Soviet surgeon Vladimir Demikhov was a pioneer in organ transplantation. He transplanted hearts, lungs, livers, & even created a 2-headed dog! His work paved the way for modern organ transplants. #SciFact

Read more : https://historyofyesterday.com/the-two-headed-dog-experiment-badd18ea6315

Not all bees are yellow and brown! Meet the blue-banded Australian bee, one of the most beautiful wild bees in the world. 🐝 #bees #australia #nature

Read more: https://www.australiangeographic.com.au/blogs/creatura-blog/2014/09/blue-banded-bee-a-native-beauty/

If an engineer is bored and really hungry, technology comes to the rescue. That is why you should not leave him hungry.

🎥 via telegram/@ mash_tech

#Engineering #Robot 🤖 #technology

#Chandrayaan3 Satellite is seperated and Ejected successfully on elliptical parking orbit. #LVM3
Congratulations 🎉 🇮🇳 India.

Happy birthday to the remarkable Nikola Tesla! Your innovative mind and inventions have left an indelible mark on the world. Celebrating the genius who lit up our lives in different ways! 🎂🔌 #NikolaTesla #HappyBirthday