meta user
network profile
| bio | website | markbeadles.com |
|---|---|---|
| location | Columbus, OH | |
| age | 46 | |
| visits | member for | 1 year, 7 months |
| seen | Jan 28 at 17:55 | |
| stats | profile views | 189 |
|
Mar 7 |
revised |
Why does a microwave oven affect other electronic devices added 118 characters in body |
|
Mar 7 |
answered | Why does a microwave oven affect other electronic devices |
|
Feb 28 |
comment |
What happens when a supersonic airplane flies through a cloud? @AaronDigulla It's a cloud layer it is going through...I wouldn't say it's deformed as such; really the effect is sort of like ripples on a pond when you throw a pebble in. |
|
Feb 28 |
revised |
What happens when a supersonic airplane flies through a cloud? added 114 characters in body |
|
Feb 28 |
comment |
What happens when a supersonic airplane flies through a cloud? An Atlas V rocket certainly goes supersonic. If you go to the linked page, you can see that the shocks map to the discontinuities in the rocket surface quite nicely. Also, the shocks are not in front - it's hard to tell but the shocks form a cone behind the rocket. Again, check the linked page for a diagram. |
|
Feb 28 |
answered | What happens when a supersonic airplane flies through a cloud? |
|
Feb 28 |
comment |
What happens when a supersonic airplane flies through a cloud? It's a "Prandtl-Glauert cloud" from the P-G 'singularity'. |
|
Feb 28 |
comment |
In-flight damage to a supersonic jet Mike is correct - if the engines can't go supersonic, you could always use gravity! But there is an ideal shape for supersonic flight (en.wikipedia.org/wiki/Sears-Haack_body) and any deviation from that shape will tend to cause shock waves. The shock waves cause rapid compression and decompression near the surfaces. This can then lead to resonance conditions like flutter or buffeting, where resonance causes vibrations to grow and grown until things fall apart. |
|
Feb 28 |
answered | In-flight damage to a supersonic jet |
|
Feb 26 |
revised |
Frequency of nomad planets passing within 30 AU of the sun added 1 characters in body |
|
Feb 26 |
comment |
Frequency of nomad planets passing within 30 AU of the sun Further: since one can assume that there are many more Pluto-sized bodies than Jupiter-sized, then let's say then that the distribution is roughly logarithmic: we get on average a Pluto-sized body every 50 million years, a Moon-sized body every 150 million, a Mars-sized body every 350 million, an Earth-sized body every billion years. Doesn't sound unreasonable at all. |
|
Feb 26 |
answered | Frequency of nomad planets passing within 30 AU of the sun |
|
Feb 25 |
answered | Battery Calculations |
|
Feb 25 |
comment |
Battery Calculations Looks ok to me. Do you have a specific question? What do you think you might be doing wrong? |
|
Feb 23 |
comment |
Experimental proof of gravitational redshift of light Great minds, etc. |
|
Feb 23 |
answered | Experimental proof of gravitational redshift of light |
|
Feb 21 |
comment |
Keeping air in a well If the planet is Earth-like in its geology, digging a hole deeper than 50km is going to be problematic since you'd be up against the mantle. |
|
Feb 21 |
comment |
Keeping air in a well For what it's worth: Mars's Hellas Planitia is 23km below datum and has 30km-high walls, and the atmospheric pressure at the surface at the bottom is 1155 Pa; normal atmospheric pressure is only 610 Pa. Not good enough for humans either way. :( |
|
Feb 19 |
revised |
Problem on nuclear physics radioactivity edited tags |
|
Feb 17 |
comment |
What is the Correlation Between Solar Wind Velocity/Density and Sunspot Count? iopscience.iop.org/0004-637X/587/2/818/fulltext/16823.text.html |
