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.

Warren Buffett: How to Make Money Investing in 2024

View All

Feudal system during the Middle Ages | World History | Khan Academy

Talk about in other videos. The Middle Ages refers to that roughly 1,000 year period of time in Europe, from the end of the Western Roman Empire in 476 until we get to about a thousand years later, with the emergence of the Renaissance and the Age of Expl…

Hershey and Chase conclusively show DNA genetic material

In the last video, we began to see some pretty good evidence that DNA was the molecular basis for inheritance. We saw that from the work of Avery, McCarthy, and Mlead, where they tried to identify whether it was DNA or proteins that acted as a transformat…

The Rainiest Place On Earth

[Derek] This is the world’s largest rainfall simulator, located in Tsukuba, Japan. Now, I know that it just looks like a warehouse with a lot of sprinklers, but this building is incredibly important. The science conducted here keeps tens of millions of pe…

PURPOSE of WEALTH (Pt3): COMFORT

Hello Alers, and welcome back as we continue our purpose of wealth series. If you haven’t watched the first two parts covering freedom and security, we recommend you start there, as this is the first one to touch on the positive material benefits brought …

The Largest Black Hole in the Universe - Size Comparison

The largest things in the universe are black holes. In contrast to things like planets or stars, they have no physical size limit and can literally grow endlessly. Although, in reality, specific things need to happen to create different kinds of black hol…

Insurance terminology | Insurance | Financial Literacy | Khan Academy

Now let’s talk about some of the words you’re likely to hear if you’re dealing with insurance. So the first one is a premium, or an insurance premium, and that’s really just what you’re paying in order to get the insurance. So if you pay, let’s say, 200 …

This Is A Light-Nanosecond!

More Articles