I wouldn’t be at all suprised if Labour doesn’t reorientate itself to be “left wing Reform” over the next year.

“Get In” by Patrick Maguire is really interesting about Starmer’s political philosophy, or lack of! As Tony Benn said, there are two types of politicians: signposts and weather vanes. KS seems to definitely be the latter.

Regex is a bit old school. They’re probably developing a DL model to assess informational content!

When something like this happens you can hear the cogs whirring as the acolytes try and rationalise it. Silence for a few hours, then “oh it’s his condition” or “it’s a Roman salute”. We all know exactly what it was.

I really enjoyed this one. Fun and informative!

If you accelerate half way and decelerate the second half the journey would take longer, about 63 years. Still within a human life time, but what would you find at the other end after 100 trillion years have passed? 👽How much will the universe have changed ☄️ 3/3

Time dilation on this journey is so extreme, a year on Earth would pass in just 300 nanoseconds on the ship. Length contraction is so extreme that a galaxy would shrink from 100,000 light years deep to about 9,000km (peak Lorentz factor 103,229,527,555,360) 2/3

Ah GR is well above my pay grade at the moment!

Bonus: relativity states the laws of physics are the same in all inertial frames. Objects don’t magically gain mass just because they’re moving quickly from someone’s perspective.

In conclusion ‘relativistic mass’ is misleading and varies by reference frame chosen. An object has 10 different apparent masses simultaneously in 10 different frames. For the ship, constant proper acceleration at 0.99c is no harder than 1g at 0.01c. Let’s go! 🛸 5/5

So its Lorentz factor is just 1, its relativistic mass is just the same as ever! It’s no harder to move than it was when it was stationary, because from its own frame it IS stationary. So relativistic mass isn’t an issue, it can keep up the same proper accel with the same fuel use.. 4/5

So the apparent mass of a 1kg object travelling at 0.9999c is 1*70.71 or about 71kg, a big increase that makes it difficult to accelerate further. This will rise towards infinity as velocity increases. BUT from the object’s own frame of reference (eg a ship’s engines) it isn’t moving.. 3/5

This gets gradually more difficult as the relativistic mass of the protons gets larger. Relativistic mass is a concept physicists don’t like because it’s misleading, but it’s calculated from rest mass * Lorentz factor, and the Lorentz factor depends on *relative* motion.. 2/5

The science passes every test they have tried en.wikipedia.org/wiki/Tests_o...

Andromeda and back at 1g would be around 57 years on the ship, but it would be 5 million years later when you arrived home! 🚀

Yes it would still be millions of years later on Earth. The journey in subjective time (physicists call it “proper time”) would be longer because you’re stopping half way.

Ps. MpMath was really invaluable for all the large numbers. I’m working on C# and Rust versions using similar arbitrary-sized floats, but the initial fixed-precision versions are also there as gists

Sure, you can check my math! gist.github.com/lookbusy1344...

Bonus: some people think ‘relativistic mass’ stops this proper acceleration in its tracks. But that’s wrong! See the next installment