Hot Ball Anemometry, How to measure air speed without moving parts, by Dr. Shawn
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- Опубликовано: 5 окт 2024
- The ability to measure air speed is foundational to environmental research. In this video, Dr. Shawn* introduces the field of "thermal anemometry" by demonstrating how to construct a unique anemometer from inexpensive and easy to acquire materials that can, without moving parts, accurately assess the movement of even tiny air currents.
LABJACK
There's nothing more empowering for a citizen scientist than being to able to monitor and control experiments using a home computer. To show how easy an experimenter's life can be with the right tools, Dr. Shawn demonstrates how to use the LabJack T7-Pro to calibrate the anemometer by using its WiFi feature to deliver data from a rotating platform, something that, before the advent of WiFi DAQs like the T7-Pro, was notoriously difficult to do.
LabJack wants to become the go-to DAQ source for students and citizen scientists everywhere. And to support this channel, they've agreed to our give subscribers a 15% discount on all of their products. So click our subscribe button, then go to their website and type in the promo code "CSW" at checkout.
Links:
LabJack labjack.com
LabJack T7 & T7-Pro labjack.com/pr...
LJTick In-amp labjack.com/ac... labjack.com/su...
Technical Notes on thermocouples labjack.com/su...
Also, check out the LabJack T4. It's a lower-cost alternative to the T7.
labjack.com/pr...
LINKS TO PRODUCTS THAT ARE NECESSARY TO CONSTRUCT THIS ANEMOMETER:
Metal Balls: USA Ball Company www.usball.com
100 Ohm 1/4 W Resistors: www.amazon.com...
5-Volt Power Supply: www.amazon.com...
9-Volt Battery Connectors: www.amazon.com...
9-Volt Batteries: www.amazon.com...
Thermocouple wire: www.amazon.com...
Note: Dr. Shawn purchased his thermocouple wire from Murphy's Electronics Surplus store, in El Cajon, California which is near his home, so he could inspect the wire and make certain that it would be stiff enough for this application. The product linked to here is less stiff than the material showed in the video. If it does not stand in its own, than you can create a support structure using a coat hanger wire to mount the device.
IF YOU DECIDED TO GOLD PLATE YOUR SENSOR
Flitz Multi-Purpose Polish: www.amazon.com...
Gold Plating Solution: www.amazon.com...
Nickel Electrodes: (Need x2) www.amazon.com...
Carbon Electrodes: www.amazon.com...
Digital Power Supply (Optional)
www.amazon.com...
*Shawn Carlson holds a Ph.D. in nuclear physics from UC Los Angeles. He is the founder of the Society for Amateur Scientists, LabRats Science Education Program, and Engagement Education. His work has been featured in numerous national publications. He is a former columnist for Scientific American and Make magazines, and a winner of the MacArthur "genius" Prize for his innovative approaches to inspiring people to love learning STEM. See: www.macfound.o... and en.wikipedia.o...
This video is sponsored by the LabRats Science Education Program: www.LabRats.org
I **LOVE** how you describe resistors as "marvels of modern technology." They really are!
Very interesting. I really enjoy these videos and your posts on Facebook. Keep them coming...
I love this!
Hell yeah dad
Are you gonna make 1000 subscriber special
Good question. What would you like to see as the 1000 subscriber special?
Yes
Sorry didn’t mean to write that but maybe you could do how are rocket works I don’t know
Maybe show me in the video
I can’t I really don’t know I love you
Good one, Shawn. I think I've managed to hook my son-in-law. We'll see.
Good to hear! If he needs any parts let me know. I've got some spare aluminum balls and thermocouple wire that I can let go cheap!