30.3.04

THE WHY AND WHERE REVEALED. Some readers also have their own weblogs. (Thanks for the kind words.)

This physics demonstration illustrates the same principle of the greater compressibility of gases than of water that requires the hostler to open the cylinder cocks before turning the steam locomotive over to the road crew. (Oh, and contemplate the resistance training that's involved in booting up a steam locomotive, not to mention hand-firing one.)

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