Jon

born 15 926 535 seconds after 3/14

[Jon @GGalileoM]

Just another coincidence:

“The Hitchhiker's Guide to the Galaxy,
Douglas Adams” = 42 letters

#TheAnswer

[Jon @GGalileoM]

@JonathanDanger4 @engineers_feed Supermassive Black Hole’s decay time due to Hawking radiation is enough practical?

[Jon @GGalileoM]

@engineers_feed 70! for lovers of approximations

[Jon @GGalileoM]

Reciprocal of the fine-structure constant, using Pi, e and φ (golden ratio) with a 0.0035% error.

#physics #constant #math

[Jon @GGalileoM]

Demonic equality.
[x] is the integer part of x

[Jon @GGalileoM]

So Elon could walk on them, going from @Tesla h.q. to @SpaceX h.q., then passing through @Twitter offices, and finally go back to Austin

[Jon @GGalileoM]

It seems @elonmusk bought Twitter for $44 billion. Let’s visualize them as 44 billion pieces of 1$ next to each other. They cover a distance of ~ 2800 miles.

[Jon @GGalileoM]

Mass ratio between Sun and Earth is approximately equal to mass ratio between an adult african elephant and a small mouse (≈ 3.3 * 10^5)
☀️:🌍=🐘:🐁

[Jon @GGalileoM]

British Library, the largest in the world, contains 170-200 million books.

Assuming an average thickness of 3.5 cm per book and place them side by side, we obtain a length comparable to Amazon River 📚🏞

#WorldBookDay

[Jon @GGalileoM]

@IsaccoSignori Welcome to Sir Arthur C. Doyle’s Club

[Jon @GGalileoM]

@IsaccoSignori People come and go, good ideas remain

[Jon @GGalileoM]

Age of Earth : ~4.54 billion years
Agricultural Revolution : ~12 000 years ago

If the entire planet history was Everest height, human civilization would be the diameter of a coin ⛰🪙

#EarthDay 🌍

[Jon @GGalileoM]

Planck constant (h ≈ 6.626 * 10^-34 J•s) using Pi and Euler’s number, with a 0.5% error

#playing #PiE

[Jon @GGalileoM]

@stats_feed an Australian kangaroo each meter on the Equator and they will cover the entire circumference of the Earth 🦘🌍

[Jon @GGalileoM]

Well, there are ~ 1.67 * 10^21 molecules in a drop, while the entire Universe is ~ 4.36 * 10^17 seconds old.
A hypothetical Maxwell’s demon should count (no-stop) like 4000 molecules/second if he had “age of Universe until now” time available. Just for 1 drop.

[Jon @GGalileoM]

Which number is bigger:
H20 molecules in a drop of water or age of the Universe in seconds?💧🕰
#comparison

[Jon @GGalileoM]

π * 10^7 seconds in 1 year ⌛️

π^2 * 10^10 neurons in human brain 🧠

π^3 * 10^17 dice (13mm) to cover the entire Earth’s surface 🎲🌍

#approx #pi

[Jon @GGalileoM]

Euler’s number 𝑒, aka “double Tolstòj” (who was born in 1828) #numbers #curiosity

[Jon @GGalileoM]

Speed of light in vacuum (c) using Pi and Euler’s number, with a 4.20 % error #funfact #math