Eratosthenes Was An Ancient Greek Mathematician Who Calculated The Earth's Circumference Over 2,000 Years

Eratosthenes was an ancient Greek mathematician who calculated the Earth's circumference over 2,000 years ago. On the summer solstice, he measured the angle of a shadow in Alexandria, where it was about 7 degrees, while no shadow was cast in Syene. By determining the distance between the two cities and using basic geometry, he estimated the Earth's circumference to be around 40,000 kilometers, which is remarkably close to the modern measurement of 40,030 kilometers.

And it has Carl Sagan in it. The video doesn’t just demonstrate a science fact, but how critical thinking works, asking why and how, then design a way to test if something is true,

More Posts from Selenophhile and Others

1 year ago
Getting Down In Space!
Getting Down In Space!
Getting Down In Space!
Getting Down In Space!
Getting Down In Space!
Getting Down In Space!
Getting Down In Space!
Getting Down In Space!

Getting down in space!

for @nataliarushman゚✧*☆

5 months ago
My My My My
My My My My
My My My My
My My My My

my my my my

1 year ago

How Prevent Gifted Kid Burnout From a Gifted Silly whose Fire is still Blazing with Rage

1. EVERYTHING IS STUPID.

School is stupid, parents with unrealistically high expectations of you are stupid, teachers who overwork you are stupid.

You don't need their approval. You don't need to impress authority to have worth.

You don't need to be perfect, especially not in a broken system.

Test scores aren't a measure of intelligence. You are smart, even if the material was difficult to grasp.

You're not "wasting your potential" if you decide to pursue a career you love. Create art, write music, perform, you're contributing to the beauty of the world. There's more value in that than most people see.

You're not "wasting your potential" if you're an adult who isn't busting their butt in college or a fancy job. The economy is fucked right now, and being an adult is hard. You're doing your best.

And sometimes, you can't be at your best all the time, but you're trying, and that's all that matters.

2. Don't let school ruin a passion for learning.

Just learn. Learn and love learning. Learn without school holding you down. Find your passions, and run after them. Pursue knowledge because it's fucking fun.

Research something you care about for fun, challenge yourself to learn how to complete that math problem, learn, not because you feel like you have to, but because you want to.

Never let school make you lose a love for learning.

3. They explain it more effectively than I can lol

I made a video game metaphor but, when I was finding the video that made me realize this I read another video game metaphor that explained it better, "So basically, as a gifted kid, I skipped the tutorial because it felt too easy. Then the actual game threw curveballs at me" (adorablehoe, 2nd top comment).

HealthyGamerGG's entire channel has great information

2 months ago

quit brainrot. unfollow trolls. read essays. go down rabbit holes. have a calendar. maintain a todo list. read old books. watch old movies. turn on dnd. walk with intent. eat without youtube. chew more. train without music. plan for 15 mins. execute. organise your desk. take something seriously. read ancient scripts. act fast. find bread. eat clean. journal. save a life. learn to code. read poetry. create art. stay composed. refine your speech. optimise for efficiency. act sincere. help people. be kind. stop doing things that waste your time. follow your intuition. craft reputation. learn persuasion. systemise your day (or don't). write. write. write. write more. iterate violently. leave your phone at home. walk to the grocery store. talk to strangers. feed the dogs. visit bookstores. look for 1800s novels. experience art. then love. sit with a monk and offer them lunch. don't talk shit about people. embody virtue. sit alone. do something with your life. what do you want to create? turn off your mind. play. play a sport. combat sports. notice fonts in trees. fall in love. notice patterns on a table. visualise it. talk to people with respect. don't hate. be loving. be real. become yourself. cherrypick your qualities. discard the useless. rejections aren't permanent. invite what aligns. accept what does not. read great people. be different. choose different. do great work. let it consume you. lose your mind. value your time. experience life.

1 year ago

the martian is like I am going to succeed I just need to complain first and make jokes about this overwhelming adversity. and shit on disco music

1 year ago
The Big Bang Theory, S11 EP14
The Big Bang Theory, S11 EP14
The Big Bang Theory, S11 EP14

The Big Bang Theory, S11 EP14

1 year ago
How The Geneva Drive (the Mechanical Step That Makes The Second Hand On A Clock Work By Turning Constant

How the Geneva Drive (the mechanical step that makes the second hand on a clock work by turning constant rotation into intermittent motion) works.

3 months ago
If The Oxygenator Breaks Down, I’ll Suffocate. If The Water Reclaimer Breaks Down, I’ll Die Of Thirst.
If The Oxygenator Breaks Down, I’ll Suffocate. If The Water Reclaimer Breaks Down, I’ll Die Of Thirst.
If The Oxygenator Breaks Down, I’ll Suffocate. If The Water Reclaimer Breaks Down, I’ll Die Of Thirst.
If The Oxygenator Breaks Down, I’ll Suffocate. If The Water Reclaimer Breaks Down, I’ll Die Of Thirst.
If The Oxygenator Breaks Down, I’ll Suffocate. If The Water Reclaimer Breaks Down, I’ll Die Of Thirst.
If The Oxygenator Breaks Down, I’ll Suffocate. If The Water Reclaimer Breaks Down, I’ll Die Of Thirst.
If The Oxygenator Breaks Down, I’ll Suffocate. If The Water Reclaimer Breaks Down, I’ll Die Of Thirst.
If The Oxygenator Breaks Down, I’ll Suffocate. If The Water Reclaimer Breaks Down, I’ll Die Of Thirst.

If the oxygenator breaks down, I’ll suffocate. If the water reclaimer breaks down, I’ll die of thirst. If the hab breaches, I’ll just kind of implode. If none of those things happen, I’ll eventually run out of food and starve to death. So, yeah. I’m fucked. - The Martian, dir. Ridley Scott

1 year ago

wanting to study statistics, astrophysics, aerospace engineering, aeronautical engineering, mathematics and bio chemistry all at the same time<<


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