This Is A Light-Nanosecond!

less than 1m read

·Nov 10, 2024

I trimmed my beard yesterday, so I'm feeling a bit like a baby today. But look at the trimmings! Specifically this one that is 2.4 fortnits worth of beard growth. How do I know? Well, because of this tool I made. This about 5 years ago to free people from the tyranny of standard units. It measures in weird units like beard fortnits, the typical length of beard grows every 2 weeks.

It's also got light pico seconds, how far light travels in a trillionth of a second. If you didn't get one 5 years ago but you're subscribed much later this year, three boxes from now you'll get one in a special Legacy box we're making. The entire ruler is exactly one light nond long. This is how far light travels in a vacuum in 1 nond.

Everything I see from this distance, I'm seeing as it was a billionth of a second ago. It's a reminder that you live in the past because light has a finite speed. You do not see things as they are; you see the universe only as it was. Also, you're going nowhere if you fall asleep tonight in the same bed you woke up in this morning. Your average velocity for the day will be zero.

Dividing 3-digit numbers by 2 digit-numbers | Grade 5 (TX TEKS) | Khan Academy

The Auburn Eagle - Smarter Every Day 32

View All

The Problem With the Trolley Problem

You’ve probably heard of the trolley problem, especially if you’re at all interested in philosophy or ethics. Lately, it’s been a subject of discussion when discussing autonomous cars and was referenced explicitly in the show The Good Place. Some people t…

Business Lessons From The Ancient Greeks

Business today is much more than just making profits. In fact, companies are now expected to have a positive impact on society, the environment, and the lives of their employees. And what better way to do that than through philosophy? One of the best ways…

a day in the life in Tokyo with my brother vlog

Thank you Sakako for sponsoring this video. [Music] It’s me! Today, I’ve already had my breakfast and I’m currently doing my skincare. We’re going to be getting ready very very quick and then we’ll just leave the house. Today, I’m back with a vlog that …

Why Warren Buffett Doesn't Invest in Gold

If you will reach in your pocket, I don’t like to do this, but, uh, and pull out your wallet, this is you’re watching a historic event. If you look at this, and I might point out this is a one Charlie carries. On the back of it, it says, “In God we trust…

Effects of transatlantic voyages, 1492-1607 | Khan Academy | AP US History

When Christopher Columbus first arrived in the Americas, he had no way of knowing that he had set off a complex chain of events that would lead to everything from humanity’s largest demographic disaster to the founding of a new nation nearly 300 years lat…

Meet The $700,000,000 Man Who Lost Everything | Dave Ramsey

I’m an entrepreneur. This is going to work. It didn’t. It didn’t. It didn’t. It didn’t. It didn’t. And then you put something out there that you kind of thought, “Yeah,” and then it goes big and you got, “Crap, I don’t know nothing.” You know, so you just…

This Is A Light-Nanosecond!

More Articles