I Was An Ordinary Person Who Studied Hard. There's No Miracle People!

Albert Einstein teaching at Lincoln, the United State's first Historical Black University, 1946.

'Lost in Math: How Beauty Leads Physics Astray' - A Review

‘Lost in Math: How Beauty Leads Physics Astray’ – A Review

Lost in Math is Sabine Hossenfelder’s book challenging physicists’ preference for elegant theories over experimental results. Discover how this can lead to dead end research that misleads the public. I have mixed feelings about YouTube. The good news about the video site is that anybody can start a TV channel there. The bad news is that anybody can start a TV channel there. There’s a tremendous…

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How many people can say they have played rugby with a Beluga whale? 🐳 🏉

What she says: I'm fine

What she means: How come Rene Descartes is only remembered as a philosopher, and the guy who said "I think therefore I am"? The Cartesian plane is NAMED after him and still only hard mathematicians know that he invented it. Also, the whole Newton/Leibniz argument completely ignores the fact that Descartes allowed both of them to discover calculus, because of his theories/ideas and invaluable work with exponents - he literally laid the foundations of calculus but no one mentions him when discussing who invented it. He even invented the modern notation of writing powers as superscripts as well as the convention of using x,y,z for variables and a,b,c for constants. Most importantly he INVENTED ANALYTIC GEOMETRY and pulled everyone's collective heads out of their collective asses. He was one of the greatest mathematicians. But yeah, a cool philosopher too, let's let "Cogito Ergo Sum" be his only legacy.

Basic Math in Japanese

あけましておめでとうございます

I’m sorry for the lack of posts recently, I promise I didn’t forget about this blog.

I hope you all find this useful. I formatted the post this way so you can see the phonetic guide. Let me know if it is hard to read; I can upload it again without the guide.

Euler’s identity - beauty in its purest form.

World's most frustrated mathematician promising for the third time that he won't be dealing with your bullshit again

Orbit change of artificial satellite

In order to raise the altitude of an artificial satellite, it is necessary to accelerate it. When the orbital speed increases, the centrifugal force generated by the rotation of the satellite becomes stronger than the gravity of the earth applied to it, then the altitude rises. At this time, a certain amount of energy is returned from the satellite to the vacuum space to reduce the energy debt. Hence the orbital speed decreases and finally drops below the initial speed. The sum of the reduced amount of the momentum energy and the energy required for the acceleration is returned to the vacuum space.

In order to lower the altitude of an artificial satellite, it is necessary to decelerate it. When the orbital speed decreases, the centrifugal force becomes weaker than the gravity, then the altitude drops. At this time, the satellite is given a certain amount of energy from the vacuum space. Hence the orbital speed increases and finally rises above the initial speed. The sum of the increased amount of the momentum energy and the energy released by the deceleration is borrowed from the vacuum space.

An Oxford student looking through a book on sale England, 1950