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Navigate Surgical Technologies innovative motion tracking and augmented reality for surgeons.

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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
19
comment Is electric current a scalar quantity?
@ACuriousMind - good point, I was think in terms of the question
Apr
19
comment Single particle passing through the double slit at a time
@JohnRennie - I think the question is slightly different, the OP is confused about why you need a single photon. And I think it's useful to have some different answers to the same question at different levels.
Apr
17
comment Why does the lake surface appear darker in some areas?
@GreenAsJade, yes I thought I made that clear, it was just an example.
Apr
16
comment Why does the lake surface appear darker in some areas?
In this image I suspect the lighting difference is totally from the surface, it is at such a low angle of incidence and the water is probably heavily sedimented (guessing from the location)
Apr
9
comment Why do snorkelers not need to wear corrective glasses when snorkeling with goggles on?
Also under water you can't see as far, visibility is at best 10m, and you aren't reading road signs or anything else in detail - so "in focus" is a bit less strict
Mar
26
comment Refraction of light marching band analogy
@JeroenMoons - how does the light know is possibly the most fundemental question in physic! One suggestion is that all paths are tried in multiple universes and we end up in the one with the shortest path. And that is one of the more 'sensible' suggestions
Mar
11
comment How nuclear fission works in power plants?
Read en.wikipedia.org/wiki/Nuclear_fission then ask any questions here
Mar
4
comment Scientific Laws for Engineering Materials
You could argue that purely descriptive laws like Hooke's which just describe an observation but don't offer any explanation are different from some fundamental theory which predicts effects. But I don't know what you would call them other .
Feb
18
comment How can we count 17 particles in the standard model
I think it's more that there are 17 known particles which constitue the standard model - rather than the standard model predicts/requires exactly 17particles.
Feb
18
comment What is the relationship between the Young's modulus of a material and the elasticity of a free fall collision
@fffred it wouldn't rebound because it couldn't store the potential energy in deformation. It's one of those silly unmovable object vs irresistible force questions
Jan
23
comment How do HUD optics create readable text so close to the eye?
The same way that the crosshairs on a telescopic sight or the focussing circle on a camera are visible. The optics makes a virtual image of it at a greater distance - ideally at infinity.
Dec
30
comment What is the simplest way to perform a Cavendish experiment?
@WetSavannaAnimalakaRodVance, sorry 18th Century, it's standard history shorthand at least in British English. The experiment was done in 1799
Dec
24
comment How light years is measured?
@Floris if you are in charge of fixing the defn of 'year' and the speed of light is fixed then you can have pretty much all the decimal places you want ;-)
Nov
22
comment Time should run slower near massive body
re downvote. It isn't a bad question, just slightly awkwardly phrased by somebody whose 1st language isn't English.
Nov
12
comment Maneuvering a space shuttle using propulsion systems?
@DavidHammen - it's a wrong assumption but not a bad one.