95,298 reputation
3129236
bio website ratsauce.co.uk
location Chester, United Kingdom
age 53
visits member for 3 years, 6 months
seen 10 mins 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.


Mar
26
reviewed Approve suggested edit on Gauss's law problem. ( Need someone to point me in the right direction)
Mar
26
comment Light takes too long to get here
See this question. We didn't originate from a single infinitely dense point in space time in the Big Bang. This is a common misconception. Search this forum for flrw metric for many, many related questions. See also my answer to this question for more background.
Mar
26
revised Kinetic energy question
added 7 characters in body
Mar
26
comment Attraction and repulsion of charge?
How does your approach predict that for gravity like charges attract not repel? That is, positive mass attracts positive mass instead of repelling it. In contrast to electromagnetism, unlike gravitational charges attract (in principle, though we have yet to find any negative masses). In QFT this is a simple consequence of gravity being a spin 2 field while electromagnetism is a spin 1 field.
Mar
26
answered Inflation and the Meaning of Time
Mar
26
comment Attraction and repulsion of charge?
Your answer doesn't explain why unlike charges attract, it just says what would happen if they didn't. To understand why unlike charges attract you have to use quantum field theory because that provides a fundamental explanation.
Mar
26
answered Kinetic energy question
Mar
26
revised 3 to 3 scattering in massless $\phi^4$ theory
Typo
Mar
26
comment Attraction and repulsion of charge?
I struggle to see how this answers the question.
Mar
26
comment Attraction and repulsion of charge?
user43291: I suspect you'll find the question I have linked rather hard going, but I'm afraid that's inevitable if you really want to understand the nature of charge and the interactions between charges.
Mar
26
comment Attraction and repulsion of charge?
possible duplicate of Why do same/opposite electric charges repel/attract each other, respectively?
Mar
26
reviewed Close Question about two masses connected by a spring
Mar
26
reviewed Approve suggested edit on Perturbative Quantum Mechanics
Mar
26
reviewed Approve suggested edit on Analyzing the motion of a ball rolling without slipping inside a hemispherical bowl
Mar
26
comment How can photons interact with anything?
I think these are best posted as new questions
Mar
26
reviewed Approve suggested edit on Gases at different pressures reaching uniform pressure
Mar
26
reviewed Leave Closed Block on block with friction
Mar
26
reviewed Leave Closed Intro to Solid State Physics
Mar
26
reviewed Close Acceleration of chairlift
Mar
26
reviewed Close What are the the characteristics of a standing wave?