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 CEO Who Pays Employees to De-Locate From the Bay

The mole and Avogadro's number | Moles and molar mass | High school chemistry | Khan Academy

View All

What Does Freedom Mean to You? | The Story of Us

Freedom is different things to different people. What do you think freedom is? [Music] Dear Slaw, Paul de Leeuw, betta em, but I feel of its own oxygen. Freedom, I don’t know who was attempting bullets. Na la libertad me is so I’ll see. Ali effective a …

Safari Live - Day 300 | National Geographic

And out of this afternoon, a Craig is on camera with me, and as you may have gathered, he does a little bit of a damp start to our sunset Safari. I’m a soaked, the jackals soaked, Craig is actually relatively dry back there. The rest of us are fairly… the…

The Challenges a Repeat Founder Faces - Tikhon Bernstam

Hey guys, today we have Tea Con Burn, a multi-time YC founder. So could you just start by explaining how you first found YC? Yeah, I actually found YC because I was on Reddit. I was in graduate school, which meant I had a lot of free time. And so I was, …

RECESSION ALERT: The FED Just Crashed The Stock Market

Welp, I thought this is going to be a normal day. As I woke up, opened my computer, took a sip of coffee, expected to get more recommendations on Johnny Depp’s trial, and was immediately hit by the headline: GDP fell by 1.4 percent, leading to the concern…

The reason why your life is so boring and how to change it

You wake up tired. You work for long hours. You come back home and rather doing something you truly enjoy, you either pick up your phone and turn on Netflix and simply waste your time. You already know hitting the gym, reading a book, or going for a simpl…

Simplifying quotient of powers (rational exponents) | Algebra I | High School Math | Khan Academy

So we have an interesting equation here, and let’s see if we can solve for K. We’re going to assume that m is greater than zero, like always. Pause the video, try it out on your own, and then I will do it with you. All right, let’s work on this a little …

This Is A Light-Nanosecond!

More Articles