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visits member for 3 years, 1 month
seen Oct 9 '11 at 2:15

Jul
12
comment Why isn't pressure used for flight?
Nice response. Internal combustion for all its faults is nothing more that expanding gases pushing the cylinders.
Jul
12
revised Does my model aircraft propeller beat the sound barrier?
deleted 3 characters in body
Jul
11
comment Does my model aircraft propeller beat the sound barrier?
If you vote me down can you please state what is incorrect about my answer.
Jul
11
answered Does my model aircraft propeller beat the sound barrier?
Jul
11
answered Why does everything spin?
Jul
10
answered Calculating time for a fully charged UPS
Jul
9
answered Small scale water power, how does water volume and hight convert into electric energy?
Jul
7
comment Will this poor-man's single band pyrometer work?
The TJ36-CAXL-316U-6-CC-XCIB is a ceramic insulated type K probe it will do the job for $51
Jul
7
revised Will this poor-man's single band pyrometer work?
added 2 characters in body
Jul
7
comment Will this poor-man's single band pyrometer work?
I got it a surplus for 35$. There out there.
Jul
7
answered Will this poor-man's single band pyrometer work?
Jul
6
awarded  Critic
Jul
5
answered Batman spotlight in the sky
Jul
4
comment How could pinion in automatic quartz watch be rotated at 100K RPM?
Dental drills spin can go up to 400k rpm see [Dental drill ] en.wikipedia.org/wiki/Dental_drill
Jul
4
answered How could pinion in automatic quartz watch be rotated at 100K RPM?
Jul
4
accepted A spinning bullet
Jul
4
comment A spinning bullet
Is there something about how the spin changes the aerodynamics. But what I'm relay wondering about is if the gyroscopic behavior of something so small has an influence.
Jul
4
asked A spinning bullet
Jun
30
comment On a bicycle, why does my back tyre wear so much more quickly than the front?
@qftme i have explained in meta way my spelling is so bad but if you cant get over it then... now if the physics is incorrect you are free to spell it out.
Jun
30
comment On a bicycle, why does my back tyre wear so much more quickly than the front?
you are correct that a "PRO" brake more whit the front brake I made the ASSumption of it not being a pro.