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Politics : Politics for Conservatives
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To: J.B.C. who wrote (124565)10/25/2025 1:10:37 PM
From: pheilman_6 Recommendations

Recommended By
Alan Smithee
Bill
D. Long
sm1th
Stock Puppy

and 1 more member

   of 124587
 
Having read the great book, Longitude, and having sailed, let me state, there is no way to spot the moons of Jupiter from a pitching boat. It was a proposed solution to calculate the time, but was not useful, in practice. The clocks were the solution, and I have been thrilled to see H1, H2 and H4 at the Greenwich museum. The early versions were large and used grasshopper hinges to avoid friction. H4 is an amazing leap to a small watch size in comparison. Calculating longitude is just a matter of having accurate time vs. the sun coming above the horizon. Explains the eyepatches on pirates, they were not careful with their sunsightings and got blinded. Harrison's clocks enabled global navigation.

H2 is so low friction that it is running continuously. (after being rebuilt) H4 is not running as it has wear elements even though they might be jeweled.
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