PRASHANT

Student। Alien 👽। Poetry। Science। Philosophy 📚। Space & Universe 🌌✨

[𝗗𝗲𝘀𝗶 𝗩𝗮𝗶𝗱𝘆𝗮 @DesiVaidya]

Kitchen की ये Powerful Hacks हर किसी को ज़रूर पता होन�� चाहिए!

[Massimo @Rainmaker1973]

Sunflower Exhibition in Chengdu, China

[Massimo @Rainmaker1973]

How the Sun, Earth, and Moon move.

[उम्दा_पंक्तियां @umda_panktiyaan]

ऐसी हो हँसी
कि मुंद जाएं आँखें

आँखों के मुंदने से
दिखाई नहीं पड़ती है
भीतर की उदासी।

~ भास्कर चौधरी

[Rita Kay @Kusaasirarita]

When my husband fails to apologize for his mistakes 🥹🥹🥹🥹🥹🥹🥹🥹🥹🥹

[Gobhii @Botplayer567]

Night rahegi 🥀

[SanjuGoyal01 @SanjuGoyel]

बच्चा किसी का भी हो जब भटक जाता है तो सिर्फ़ और सिर्फ़ मां की तलाश रहती है

इसीलिए कहते हैं मां का स्थान कोई नहीं ले सकता

[أمثال عالمية @WorldProv]

الذي اختارك من بين الزحام يختلف كثيراً عن الذي وجدك في طريقه ."

[Massimo @Rainmaker1973]

Each planet has its own sound obtained by turning electromagnetic signals into audible sound waves.

[Words & Wisdom @WordsnWisdom26]

If nothing saves us from death, at least love should save us from life.

— Pablo Neruda

[Massimo @Rainmaker1973]

Google unknowingly documented an elderly couple’s life journey in Indonesia.

[Prof cheems ॐ @Prof_Cheems]

Happy Teachers Day 🎉

[Sw. Chaitanya Keerti ( Narain Das ) @keertiswami]

Instead of worship of a Buddha, Be A Buddha yourself.

[Massimo @Rainmaker1973]

Do you know which generation you belong to?

(plus something interesting)

[The Curious Mind @TheCurioMindX]

The observable universe is more than 93 billion light-years across...

Yet humans have traveled only about 1.3 light-seconds away from Earth.

[The Curious Mind @TheCurioMindX]

If you travel at a very high speed, time for you will pass much more slowly compared to other people.

This is not just a theoretical concept. This effect has already been experimentally measured.

In 1971, physicists Joseph Hafele and Richard Keating used Cesium atomic clocks to test this. They placed some atomic clocks on commercial airplanes and flew them around the world, while other identical clocks were kept on Earth as references. The flights were made both eastward and westward.

Cesium atomic clocks were used here because the expected time difference was extremely small. To accurately measure this tiny difference, they needed clocks that could measure time with extremely high precision.

When the airplanes completed their journeys and returned, the Cesium atomic clocks on the airplanes were compared with the clocks on Earth. The clocks did not record exactly the same amount of elapsed time. The eastward flight clock showed slightly less elapsed time compared to the ground clock.

In other words, slightly less time had passed for the clock that had traveled on the airplane compared to the clock that remained on Earth.

And this is what makes the whole concept so interesting.

This effect is explained by Einstein's theories of relativity. The time dilation caused by speed comes from Einstein's Special Relativity, while the Hafele-Keating experiment also involved the effect of gravity. According to Special Relativity, when an object moves at a very high speed, time passes more slowly for it compared to a relatively stationary observer. This is called Time Dilation.

Now, let's understand this with an example.

Suppose you are 20 years old and you travel in a spacecraft at around 99.9% of the speed of light. If, according to the spacecraft's own clock, you travel through space for 10 years, only 10 years will have passed for you.

So when you return to Earth, you will be about 30 years old.

But on Earth, about 224 years will have passed.

This means that time is not something that necessarily passes at exactly the same rate for every observer. As your speed becomes more extreme, the difference in elapsed time between you and a relatively stationary observer can become much larger.

In other words, theoretically, if you could travel extremely close to the speed of light, you could experience only a few years yourself while hundreds of years pass on Earth.

And that is what makes Einstein's theory of relativity so mind-blowing.

[hal @HAL09999]

🛰️