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.

Multiplying by j is rotation

Joe Rogan brutally rejects Kamala Harris’s list of demands to appear on his podcast

View All

The simple idea that changed my life

So I’ve played a lot of video games in my day. Whether I’m playing Fallout, or The Sims, or RuneScape, just to clarify, I don’t still play RuneScape. I’ve noticed there’s a commonality to pretty much every game, and that’s this idea that when you upgrade …

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

Hi Kevin, my question is, what should I do with the 21,000 in my bank account? I’m only 20, and I have 21,000 because of a parent passing away when I was younger. Well, it’s definitely time for another session of Ask Mr. Wonderful! I got dozens of fantas…

Building an Engineering Team by Ammon Bartram and Harj Taggar

As a slides of loading, there is no topic that should occupy your minds more as you build your company than bringing on the team that’s going to make your company successful as you move forward. Hajin Amin from Triple Byte, YC alumnus, is going to talk ab…

Inside the Struggle to Save an Endangered Grouper Species | National Geographic

This female Nassau grouper caught off the coast of Biz is taking her last few breaths. The survival of this endangered species, an apex predator, is critical to the survival of the coral reef. The Bellian Barrier Reef, the second longest in the world, is …

Restoring the River's Flow | DamNation

Dropped my gear off, schlepped it all out over the fence, drove back down, parked the van, got on my bicycle, rode up there, stashed it. Gl’s canyons near vertical; it’s very steep, it’s dark, it’s a damp slippery dam with a 200t abyss right below. So we’…

Using matrices to transform the plane: Mapping a vector | Matrices | Precalculus | Khan Academy

Let’s say that we have the vector (3, 2). We know that we can express this as a weighted sum of the unit vectors in two dimensions, or we could view it as a linear combination. You could view this as (3) times the unit vector in the (x) direction, which i…

This Is A Light-Nanosecond!

More Articles