Carl Graham

Writing applications in Z80 before C
Mini Office spreadsheet for Amstrad CPC 464

Are a few specs of dust ruining an experiment or making it more realistic?

If that does not work, then may I suggest a bigger hammer.
I stick to Lego. (Not in a super glue way)

It's always annoying when you write a simulation, and it does exactly what you predicted the first time.
Nothing learnt at all.

Bit quiet around here. 🙃

Stars are pure hydrogen because star formation is a frictionless gas centrifuge running for hundreds of thousands of years.
With materials denser than hydrogen carrying away angular momentum as they are flung out.
This lets hydrogen spiral in.

I had totally forgotten my pascal to z80 compiler I wrote in TRS80 basic 47 odd years ago, could generate long hand multiplies for constants instead of calling the multiply subrouteen.
I just found the schedule for implementing it in the Mini-office spreadsheet module.

Careful, I fell down the rabbit hole of relativity starting from Doppler shifts multiplying in a straight line for conservation laws & thermodynamics.
That was in 1978 & I am still down there.

Oh yes totally.
Nudge nudge wink wink .. 😉

Caldwell 4 and 12 I believe
Do I sense another video coming on YouTube.
I think Patrick Moore talked about the first one a Queen Mary.

Reminds me of working on old PCs with built-in CRT displays.
Red tape on 90v for value anodes, (horizontal & vertical drivers) green cathode heater , blue I think was 5v for 6502, etc, and black CRT HT.

It would be interesting to see what happens when 2 lights are connected to separate power sources.

With me, it is electronic components. Reorder because I can't find one and then put it in a safe place with...

AI can be a great learning aid, but when you are learning and it gets something wrong, it opens the pit of confusion.

Asking: "Explain the vertical axis on Figure 5" was a big mistake the other day.

In physics, if your strange theories make predictions that don't match observation or experimental results, you are wrong.

So, when I get rings around neutron stars and black holes that look highly stable even as you dump huge amounts of mass in?
(only when very hot env)

Or does that explain...

Highest confidence in the final option 😀

Personally, I like the good old universe dragged through time by irreversible events (entropy increasing)

I printed something similar for my drawing tablet a few years ago.
I guess my version created in blender printed a bit quicker 😀

You think you are old.
I had left university when most of these came out and working in the games industry .

I hope they vaporise a long way out.
Building sized objects travelling at those speeds!

Fascinating video a always.
When enough of these have been spotted so, we can estimate a size distribution in the population the goes from rogue gas giants too snow balls.
Any guesses on the smallest we will detect? Would the Sun evaporate sub 20m object before they reached visual range?

Try soldering a Tiffany style lampshade made from sweet rappers on perspex😀

If you don't like the soldering part, you can always 3d print the framework using black or silver filament.

That reminds me, I have not seen my pin hole camera since we moved.

I've always had strong doubts about std cosmology.
Seems based on a fuzzy interpretation of the laws of physics with too many parameters compared to strict modelling with everything relative and strict conservation.

I hope you are modelling the galaxy's magnetic field accurately 😀

I just can't make my favourite explanation for QM observers compatible with spacetime.

So supermassive blackholes have been growing for hundreds of billions years, and the cosmic background is thermal radiation from interstellar ice with a surface area 10^10 greater than stars.
(0.1% sky)

Oh well

If your filament gets damp enough to need baking , I find baking makes it better but does not fix it totally. (Powedery surface doesn't uncurl nicely, brittle, resulting in jams, etc)
It is much better to store it in very dry conditions.

Some modern filaments don't seem to absorb much anyway.

At the time, I found it a little reassuring that if you ask maths a stupid question, you get an odd answer 🤔

I desperately avoid tensors by working on the simplest thought experiment I can think up, but they all turn into noisy heating kettles.

I never found one good book I liked on tensor calculus. As I am slightly dyslexic I have nightmares about tensor indices juggling around on the page and don't make me think about spotting identities.

Why did my mind take me down this path 😞

Gravity is like a kettle heating.
Unless you model it with full fluid dynamics, you don't expect it to make a noise.