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.

The True Cost of the Royal Family Explained

The Water Crisis | National Geographic

View All

Getting Buried In Concrete To Explain How It Works

I am about to get buried in concrete. And while that’s happening, I’m going to explain everything you need to know about this substance. So the first thing that I want to clear up is the difference between cement and concrete, because people often mix the…

Analyzing unbounded limits: rational function | AP Calculus AB | Khan Academy

Let f of x be equal to negative 1 over x minus 1 squared. Select the correct description of the one-sided limits of f at x equals 1. And so we can see we have a bunch of choices where we’re approaching x from the right-hand side and we’re approaching x f…

Definite integrals of sin(mx) and cos(mx)

In the last video, we introduced the idea that we could represent any arbitrary periodic function by a series of weighted cosines and sines. What I’m going to start doing in this video is establishing our mathematical foundation, so it’ll be pretty straig…

Tesla : The Ponzi Factor

When we think about the stock market, we think about money, the finance industry, businesses, and making money from investing in successful businesses. The belief is investing in successful businesses is what leads to investment profits, and there’s a dir…

Bradley Cooper attempts to cross a snowy ravine on his own | Running Wild with Bear Grylls

Key things that Bradley needs to remember this morning is all the intricacies of firing that grappling gun. Then he’s got to secure that line; if necessary, use that Vector system to double up that strength. Then he’s got to commit to it and go for it bec…

Facebook Freebooting - Smarter Every Day 128

Hey, it’s me Destin. Welcome back to Smarter Every Day. I want to do something a little bit different today; let’s start with a story. Once there was a kingdom where wealth was determined by what sheep you owned. There was a rich man who had many, many s…

This Is A Light-Nanosecond!

More Articles