17,165 reputation
12453
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location Vancouver, Canada
age 45
visits member for 4 years, 4 months
seen 4 hours ago

VP Research&Development at an image guided surgery startup.

Mostly do C++,python,image processing,machine vision - anything with lots of 3D,maths and data. Background is experimental physics and optics.


Jul
26
comment Can we extract positrons from gamma rays?
yes, the problem is more likely to be getting a strong enough source of gamma rays
Jul
25
comment How power lines use high voltages with a low current?
@RJSmith92 the V in the question is the voltage difference along the cable = "wasted" voltage. By having a high voltage/low current cable then with a given R you have a low V difference = low wasted power.
Jul
19
comment Do all stars Turn into Black Holes?
physics.stackexchange.com/questions/99375/…
Jul
18
answered Image formation or Diffraction?
Jul
18
comment How easily can the Earth flip?
@punkerplunk the rotation kinetic energy of the Earth is around 10^29J that's a lot of energy - leaving aside the lack of a mechanism for transferring it.
Jun
21
answered Having trouble understanding spectral lines
Jun
19
awarded  Good Answer
Jun
9
answered Do transformers lose energy?
Jun
8
answered Ice/Melting Bullet
Jun
4
comment Why can't LIDAR be implemented with traditional antennae?
Yes that's true, with enough power and a poorly matched impedance you could make the antennae emit visible light - fairly briefly
Jun
4
answered Why can't LIDAR be implemented with traditional antennae?
May
22
awarded  Nice Answer
May
14
answered How do eagles fly slowly for a long time?
May
14
comment Saturn V F-1 engines and beyond
If you only care about peak power then Project Orion en.wikipedia.org/wiki/Project_Orion_(nuclear_propulsion) is probably the winner
Apr
24
comment Can we find the exponential radioactive decay formula from first principles?
@dmckee it's unavoidable if the decaying nuclei are independent. If there was any field between atoms you could have a different law.
Apr
22
comment Car motor heat to drive a steam engine
en.wikipedia.org/wiki/Automotive_thermoelectric_generator
Apr
22
comment True randomness via Radioactive decay
yes, yes, and physics.stackexchange.com/q/105107
Apr
20
comment Measuring depth or height from sea level
It's a famous problem science20.com/news_articles/…
Apr
20
answered Why are magnets made in only a few shapes?
Apr
19
revised Is electric current a scalar quantity?
added 13 characters in body