2,534 reputation
1125
bio website infosecfrog.blogspot.com
location Scotland, United Kingdom
age 43
visits member for 3 years, 7 months
seen Oct 22 at 9:59

Jan
31
awarded  Civic Duty
Jan
28
revised What is the mass distribution within the sun?
Changed title to actually match the question.
Jan
28
suggested suggested edit on What is the mass distribution within the sun?
Jan
23
awarded  Excavator
Jan
23
revised Do we really know which slit the photon passed through in Afshar's experiment?
formatting for readability
Jan
23
suggested suggested edit on Do we really know which slit the photon passed through in Afshar's experiment?
Jan
14
comment What causes an aircraft to roll when rudder is applied
The primary cause of yaw induced roll is the differential in lift produced by the two wingtips travelling at different speeds. Certainly, you get a lot of other effects and secondary effects, but wing sweep is only a small factor.
Jan
12
awarded  Enthusiast
Jan
8
comment Estimating drag due to wind - ribbon-shaped sail
Remember jet stream winds can be over 50m/s, and they are unpredictable in their route. Admittedly the strongest ones are closer to the pole, but be aware of loops of high altitude (>30000m), high speed winds in any calculation.
Jan
7
comment Ideal distance of eye from a lens
This will depend entirely on combination of the lenses used and their focal length, and quite possibly on whether you care about the image being upright or inverted
Jan
3
comment Is it possible that there is a color our human eye can't see?
Ah - yes, Sorry @Bernhard - in re-reading, I agree with you.
Jan
3
comment Is it possible that there is a color our human eye can't see?
The simple proof is that some animals can see in infra-red, and some can see in ultra-violet. This is well understood.
Jan
1
answered Energy source of electrons?
Dec
27
comment The Double Slit Experiment - delayed measurement
One question- they didn't record the Data so how do they know what they got?
Dec
20
comment Why are there more vertical takeoff than horizontal for spacecrafts?
True - it's all about progress, and this is a step.
Dec
18
revised what would my path look like using the sun for navigation
added 324 characters in body
Dec
18
suggested suggested edit on Why don't astronauts in orbit get stuck to the “ceiling”?
Dec
15
comment Liquid with freezing point above 0 Celsius that could be use at ice rinks
Iron- it has a freezing point well above zero degrees. Seriously though, water is used because it is plentiful, freezing point is at a useful temperature, plumbing is already understood and simple at this temperature and it is largely safe.
Dec
6
answered How do they produce air on the ISS?
Dec
4
awarded  Quorum