Re: Bouncing eggs

Subject: Re: Bouncing eggs
Date: Mon, 30 Mar 1998 16:37:18 +0900
At  0:52 PM 98.3.30 +1000,  wrote:
>>The egg experiment was conducted on 28 March. This showed the egg
>>oscillating about its short axis by about 30 degrees either side of the
>>centre line - blunt end down. This would make sense in view of centre of
>>gravity considerations. The egg struck the grassy surface near the apex of
>>the blunt end - a little off-centre - and bounced to a height of around
>>800mm; giving one small extra bounce before coming to rest.
>What temperature were the eggs at when thrown? You might need to compare
>eggs straight from the fridge with eggs warmed to ambient temperature.
>Also, you might consider placing a sample of eggs in an "inverted"
>orientaion for an hour or so before tossing to see if the centre of gravity
>changes and affects the flight dynamics and consequent landing/shock

Presumably the yolk is slower to decelerate than the shell - perhaps
compressing or at least deforming the air sac inside as it is slowed. So
frozen eggs should not survive and quite warm ones should do much better.
Those landing on their side should break most easily (if i am right:)

Desmond Allen
Machida Shi,
Tokyo 195-0053

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