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Brian Dunning
Works at Skeptoid Media
6,971 followers|628,482 views
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#DailySkeptoid: The biggest known insect in history was Meganeuropsis permiana, similar to a dragonfly, the size and weight of a crow.
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Brian Dunning

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Thanks to J Sadler who kindly donated stuff from Amazon - Identify thyself so thee may be recognized and credited!
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Brian Dunning

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I'm being evaluated for an asthma clinical trial right now - monoclonal antibodies. My untreated breathing capacity is just above 50%.
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Brian Dunning

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The Black Eyed Kids - Today on Skeptoid. http://skep.us/4410
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OK that should be cool. 
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#DailySkeptoid: Hyman's Imperative: Do not try to explain something until you are sure there is something to be explained.
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#DailySkeptoid: The Mach 3 XB-70 bomber got so hot nitrogen was used to replace the used fuel in the tanks, else it would have burned.
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Have him in circles
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#DailySkeptoid: The Death Star is real. It is a moon of Saturn. Take a look: http://is.gd/aV6KXm
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That's what the people at JPL called it when they saw the first images of Mimas that Voyager sent back. 
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#DailySkeptoid: Intellectual courage is the willingness to abandon cherished beliefs in favor of following the data.
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Brian Dunning

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Watch this movie trailer: http://bit.ly/1t2ztAC - I'm very proud to call James Randi a personal friend. What a great gentleman.
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#DailySkeptoid: Airplanes' ground effect is due to the lack of space for drag-causing vortices. No such thing as a "cushion of air".
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Not sure I buy that.
Swing a yardstick through the air, and you can hear the molecules of gas being pushed aside. An object moving through the air pushes air ahead of itself, creating higher pressure in front of it, compressing it to a degree depending on the velocity. Increase the velocity and eventually the air cannot get out of the way fast enough - the speed of sound.

There is a physical impediment presented by the compressed air. To a degree, that will provide support to an object that is pushing the air against the ground.
The pressure differential is how an airfoil generates lift, vortices have no role in generating lift, or in allowing it.

I believe the lack of drag-causing vortices would contribute to the efficiency of this condition, I don't think their absence is the sole cause.

A hovercraft rides on a cushion of compressed air pushed between the craft and the ground, the same effect generated differently.

I am not a trained scientist, but working in Naval aviation has given me a fundamental grasp of the working concepts.

If I am mistaken I would really like to understand why.
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Have him in circles
6,971 people
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  • Skeptoid Media
    Typist, 2006 - present
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Science writer. Host of Skeptoid podcast. Dork.
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I'm Brian Dunning, from Skeptoid.com.
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