136,371 reputation
9228378
bio website ratsauce.co.uk
location Chester, United Kingdom
age 54
visits member for 4 years, 4 months
seen 2 hours ago

Semi retired old time computer nerd who started programming on a Commodore Pet.

Since I'm also active in the Physics forum I should add that I started as a theoretical chemist, moved into solid state photochemistry and finally worked in industry as a colloid scientist. I only became a full time computer nerd in 1997.


Jan
11
reviewed No Action Needed Is 'grapheme' a substance or a typo?
Jan
11
reviewed No Action Needed Significant Figures in Physics
Jan
11
comment Tension on strings holding a weight
Try $T_1 = \sqrt{2}T_2$ instead of $T_1 = -\sqrt{2}T_2$
Jan
11
comment What is distance and velocity regarding to wormholes?
@AndreyMinogin: the trouble is that you're just making things up. You say the wormhole mouths are in relative motion but the wormhole has a fixed length. I know of no wormhole metric that allows you to make that claim.
Jan
11
reviewed No Action Needed Curvature of spacetime as a real thing?
Jan
11
reviewed Approve Orbital configuration for two bodies at fixed distance from each other
Jan
11
reviewed Reject Stiffness of a suspension
Jan
11
reviewed Leave Open Can we manipulate gravitation?
Jan
11
comment What is the maximum light difference for one to be able to see into or out of a building and equally discern objects?
I think this has to do with the way the eye works rather than any physical principles.
Jan
11
comment What is distance and velocity regarding to wormholes?
@AndreyMinogin: I mean that in Einstein's physics there's no unique straight line between two points, and those straight lines may have differnt lengths. I've updated my answer to discuss the velocity.
Jan
11
revised What is distance and velocity regarding to wormholes?
Respond to comment
Jan
11
comment Time Dilation Properties
@Joe: that's an accidental coincindence. In Reissner-Nordstrom or Kerr/Kerr-Newman black holes the cooincidence you noticed doesn't exist.
Jan
11
comment Would the universe look any different today if energy/matter had not appeared until some time after spacetime had begun expanding?
@LionelDoolan: I've edited my answer to respond to your comment.
Jan
11
revised Would the universe look any different today if energy/matter had not appeared until some time after spacetime had begun expanding?
Typo
Jan
10
reviewed No Action Needed What is reduced momentum in “A Dynamical Theory of the Electromagnetic Field” by James Clerk Maxwell?
Jan
10
revised What is distance and velocity regarding to wormholes?
Typo
Jan
10
comment What is distance and velocity regarding to wormholes?
@KyleKanos: I meant what I typed, though I concede it wasn't very clear. Hopefully I've clarified it a bit now.
Jan
10
revised What is distance and velocity regarding to wormholes?
Clarification
Jan
10
answered What is distance and velocity regarding to wormholes?
Jan
10
comment Wavelength used in manufacturing of integrated circuits (IC)
You might also be interested in this article as it covers some of the basics.