links: March 2011 Archives
A new climate survey began last week and everyone in the UK is invited to take part. There’s a list of four things you can do to help:
- Look out for aircraft trails (contrails)
- Watch cloud movement to record wind direction
- Record how hot or cold you feel, and
- Blow bubbles to measure wind speed and direction near the ground.
Yes, you’ve read number four correctly: blow bubbles. You don’t even have to buy a bubble blowing kit — just watch this video from Open Air Laboratories (OPAL) and learn how to make your own bubble blower cone using only a couple of sheets of paper:
OK, fun and easy, but… why? It’s not as loopy as it sounds — if you blow bubbles outdoors, the way they move can help you determine airflow patterns and speed close to the ground. The meteorologists at the Met Office and the Royal Meteorological Society have written a well-illustrated field guide to show you what to do, and explain what they hope to learn from the data you and thousands of others submit.
Also: lovely idea for a film, no?
One of the things I never managed to bring into the How2 studio was a rubber-powered free-flight model aeroplane. They’re amazing things: gossamer-light, profoundly fragile, yet flying slower than seems remotely possible.
Float is a documentary film that’s in production, but while we’re waiting for it — grab yourself some plans, make a simplified version of one of these models, and put together a SciCast film of your triumphs and disasters. There might be other plans out there too — I found the ones at that link after just a few minutes’ Googling.