Replying to @dallascampbell
I was fortunate enough to watch the very first episode of Dr Who. I was kneeling on the sofer, watching the reflection of the telly, in the window. I could avoid watching the scary bits. Scared the b'jesus, out of me.
That's two diffraction gratings, rotated 90 degrees, to each other.
LED colours revealed by a diffraction grating
youtube.com/shorts/OA1IZBUl-…
Replying to @SnaithGroup
A very merry Christmas and prerovskite, new year! See what I did there.
Replying to @BDAdyslexia
I was in my mid 40's, I was typing and email. One of the D.Phil. students looked over my shoulder and said, you could have easily taken a Physics degree and probably a D.Phil. there's lots support for Dyslexia. Up until then I hadn't even considered it.
Replying to @MikeRob66
Did my mum knit that jumper? I had one pretty much identical.
Can't help thinking there's truth here. Until you respect yourself, you won't respect others.
Replying to @lizfraser1 @timberners_lee
Took me a moment, South Parks Road.
It doesn't look well. Just sayin'.
A rare sailback shark, which has an unusually large dorsal fin, was first described by scientists in 1973. That was the last record of its existence – until now. newscientist.com/article/249…
Replying to @crossjacktar
When dignitaries sign documents, they usually use a fountain pen, or at least a posh Biro. Trump uses a magic marker, one up from a red crayon, I suppose!
Replying to @DeborahMeaden
Well, you can't please all of the people, all of the time. Good effort tho', I'm with you, unfortunately I live in the Dreaming Spires, so not a lot of beach.
Replying to @crossjacktar
To be fair, it doesn't say 'this way up' and the instructions were translated from Chinese.








