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.

How YOU Should INVEST $20,000 | Ask Mr. Wonderful #6 | Kevin O'Leary Answers Your Business Questions

Chip Rescues Agnes | Life Below Zero

View All

2003 Berkshire Hathaway Annual Meeting (Full Version)

[Applause] We promise not to sing Good Morning, and we’re delighted to have you all here. One of the things that makes it fun to run Berkshire is that we see real shareholders. We probably have a larger proportion of our shares held by individuals and not…

Saving Cabins in the Arctic | Life Below Zero

I’m learning new country this winter, so my greatest challenge is don’t let the land or the weather kill me. The water is cold; you feel get used to it after a while. This is a big chunk of ice. Rico and Skyler have traveled to the Celawat hot springs wit…

The Four Forces of Nature

The word “force” is used quite a bit these days. A government may threaten the use of force on another nation. A child might scream in protest at being “forced” to clean their room. But, even though we may not automatically think there’s any kind of scien…

Decimal multiplication place value

This is an exercise from Khan Academy. It tells us that the product 75 times 61 is equal to 4575. Use the previous fact to evaluate as a decimal this right over here: 7.5 times 0.061. Pause this video and see if you can have a go at it. All right, now le…

Slope and intercept in tables

Flynn’s sister loaned him some money, and he paid her back over time. Flynn graphed the relationship between how much time had passed in weeks since the loan and how much money he still owed his sister. What feature of the graph represents how long it too…

Correcting a Dachshund's Bad Habit | Cesar Millan: Better Human Better Dog

All right, so this is the final challenge. It’s a sick sack of obstacles. Caesar works with Millie, a seven-month-old dachshund, whose habit of eating trash off the ground could have lethal consequences. This is serious; this dog can actually get hurt. Ca…

This Is A Light-Nanosecond!

More Articles