2013年3月31日 · There is an episode of 'The Magic of Science' on the Discovery Channel that features a device called a hail cannon which uses the force of a vortex of air blasted out of a …

2006年4月25日 · In summary, the conversation discusses a design project involving a hail cannon and the difficulties in calculating the theoretical pressure needed to propel ice balls at a certain …

2020年12月10日 · Bored Man Builds Hail Cannon. The mysterious booming sound that's been rocking a New Jersey town is apparently the result of a homemade "hail cannon" designed by …

2017年5月20日 · Thanks guys for the kind words ! I'm no gunsmith but i believe the locking lugs transfer lateral force from the bolt to keep the high pressure gas inside the sealed barrel …

2013年12月14日 · Why Does Theoretical Pressure Exceed Empirical Values in Hail Cannon Designs? Apr 27, 2006; Replies 4 ...

2015年11月26日 · In summary, barometric pressure refers to the pressure exerted by the weight of the Earth's atmosphere, while measured pressure is the pressure measured by a device …

2023年1月18日 · Learn the definition of storms and browse a collection of 33 enlightening community discussions around the topic.

2011年3月30日 · Celsius is a relative temperature scale and the negative doesn't have any deeper meaning other than it was decided to use 0 as the freezing temp of water because it is …

2009年8月3日 · You can probably make them cheaper with steel wool. Pull out a loose strand about an inch long and wrap each end around a heavier copper wire (one wire per end; you …

2011年5月8日 · An analogy with water. You've got a river with water flow. Into a river there's a fish cage. Water is flowing through the cage, and if a molecule of water enters the cage through …