2,546 reputation
422
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location Seattle, WA
age
visits member for 2 years
seen Oct 7 at 3:30

I participate on this site because I really enjoy physics and because I would like to learn more about what makes an online community work well. Questions often interest me more than answers – although I think the best answers are grounded in observation and experiment. I’m optimistic that there are still many surprising discoveries yet to be made in the physical sciences. I believe physicists should be good citizens. I believe my children will know things about the natural world I can’t even imagine – and will learn them in ways quite different than how I was educated.


Jun
10
revised Can Aluminium be softened
typo - my ref is degrees F not degrees C - corrected
Jun
9
answered Can Aluminium be softened
Jun
9
revised Can Aluminium be softened
this is a question about strain-hardening and annealling of aluminium metal
Jun
6
answered Of all the electrical energy used in a home, is there any portion that won't eventually become thermal energy in the home?
Apr
21
comment Effect of CO2 on the environment, besides greenhouse effect and ocean acidification
I think this question needs to be more specific. Are you asking what physical effects (measurable) CO2-concentration has on the atmosphere?
Apr
17
revised Calculating the mass of a wave of water
this is about ocean wave physics
Apr
17
answered Calculating the mass of a wave of water
Apr
12
comment If the MH370 black box did sink to 15000 ft, how long would it have taken?
Yes good answer, but what might the bounds be on your solution given the piece containing the box is smaller than the 777 and no larger than the box itself. And how deep is the Indian Ocean?
Apr
5
comment Earth as a conductor and emf produced?
The basic physics and math of magnetotellurics is described here
Apr
5
comment Earth as a conductor and emf produced?
Magnetotellurics is the term used for the geophysical technique used to probe the Earth's electrical properties (crust and mantle.)
Apr
2
comment Could one measure a stick to an arbitrary precision by having its length estimated by enough people?
If the motion of the ship added imprecision to the clocks, it might not matter how many clocks you had, if they were all on the same ship ... they could all become equally impaired
Apr
2
revised Could one measure a stick to an arbitrary precision by having its length estimated by enough people?
added 757 characters in body
Apr
1
comment Could one measure a stick to an arbitrary precision by having its length estimated by enough people?
What if everyone had a different measuring rule manufactured in the same factory - and made of green wood - which shrank 0.1% over time? The inaccuracies would not average out.
Apr
1
revised Tsunami dampening mechanisms
added link to paper about natural tsunami barriers
Mar
30
answered Could one measure a stick to an arbitrary precision by having its length estimated by enough people?
Mar
29
answered Tsunami dampening mechanisms
Mar
28
comment Tsunami dampening mechanisms
This recent paper published in Nature: Taming hurricanes with arrays of offshore wind turbines immediately came to mind when I read your question.
Mar
25
comment How do we know that earth is not perfect sphere?
+1 Good point - I have responded to your comment in the answer body
Mar
25
revised How do we know that earth is not perfect sphere?
added 1528 characters in body
Mar
25
revised How do we know that earth is not perfect sphere?
added 1528 characters in body