Who first suggested that pendulums be used as time keepers?
Huygens
Vespucci
Harrison
Galileo
Who finally convinced Parliament to give John Harrison the rest of his prize money?
The King (King George lll)
When Galileo was finally recognized for his idea of finding longitude using the “heavenly clock” he was called a _____________ and given a ________ ________.
Genius, gold chain
What was the drawback of pendulum clocks that made them useless on ships?
They had to be kept perfectly level!
Who was the famous “Sun King of France”?
King Louis XIV
What type of energy was stored in the spring in Harrison’s clocks?
Mechanical energy
What one of Harrison’s clocks was the first to pass the test required to win the longitude prize?
H4
Where was the Royal Academy of Science located?
Paris, France
How much did the first portable clock weigh?
72 pounds!
The _________ parliament announced a large money reward to anyone who could invent a time keeping device that wouldn’t lose more than ___ minutes per day, even at Sea.
English, 2
The first pendulum clocks were sent all over Europe and they determined the exact latitude and longitude coordinates of cities and towns using what location as their Prime Meridian?
The Paris Observatory
Greenwich
The English Observatory
The Holland Observatory
There were 2 main parts to Harrison’s clocks. What were they?
1. Spring 2. Trigger mechanism (grasshopper escapement)
Who invented the pendulum clock?
Christian Huygens
The most accurate map in the history of the world was located in Paris and drawn on the observatory floor. What was the diameter of this map?
24 ft
There are 2 past explorers that were mentioned in this text for using planets and eclipses to determine longitude. Who were they?
Columbus and Vespucci
King Louis XIV offered 2 incentives for anyone who could determine longitude. What were the 2 incentives?
1. (Longitude) Prize 2. Royal Academy of Science
Why didn’t parliament want to award John Harrison the prize money?
They had spend their own money on inventors and wanted the prize money for themselves.
What simple clockmaker devoted his life to making a clock that wouldn’t lose more than 2 minutes per day, even at sea?
John Harrison
The first portable clock made by John Harrison was called _______ ?
H1
What country finally recognized Galileo’s ideas about using the “heavenly clock” to determine longitude and gave him credit for them?
Holland
What was the Royal Academy of Science designed for?
To attract the best and brightest minds from all of Europe
When John Harrison added this mechanism to his clock it became much more accurate. What was this mechanism called?
Grasshopper Escapement
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