raphnet.net— This is a cool apparatus for those living in the south or in the tornado alley. For the meteorologist to be this is just right.
Nov 1, 2005View in Crawl 4
Darn the site's down.I would like to build one of them.I think it's as simple as a little math equasion to get from rpm to mph. So, I'll be looking for that.
Google Rocks!Here's something I found on the iNet with Google." Your anemometer is useful because it rotates with the wind. To calculate the velocity at which your anemometer spins, determine the number of revolutions per minute (RPM). Next calculate the circumference (in feet) of the circle made by the rotating paper cups. Multiply your RPM value by the circumference of the circle, and you will have an approximation of the velocity of at which your anemometer spins (in feet per minute). (Note: Other forces, including drag and friction, influence the calculation but are being ignored for this elementary illustration. The velocity at which your anemometer spins is not the same as wind speed.)"
micromauseNov 1, 2005
Nice! Gonna make one, I live in OK.
computermanNov 6, 2005
Darn the site's down.I would like to build one of them.I think it's as simple as a little math equasion to get from rpm to mph. So, I'll be looking for that.
computermanNov 6, 2005
Google Rocks!Here's something I found on the iNet with Google." Your anemometer is useful because it rotates with the wind. To calculate the velocity at which your anemometer spins, determine the number of revolutions per minute (RPM). Next calculate the circumference (in feet) of the circle made by the rotating paper cups. Multiply your RPM value by the circumference of the circle, and you will have an approximation of the velocity of at which your anemometer spins (in feet per minute). (Note: Other forces, including drag and friction, influence the calculation but are being ignored for this elementary illustration. The velocity at which your anemometer spins is not the same as wind speed.)"