Longitude: John Harrison

After Bradley died, who filled the open slot on the Board of Longitude?

• Harrison

• Maskelyne

• Bliss

• It remained vacant.

Who placed the prime meridian in Greenwich?

• Halley

• Gould

• Nevil Maskelyne

• Flamsteed

The Parliamentary committee assembled to respond to the problem of longitude relied on which two experts?

• Flamsteed and Thacker

• Newton and Halley

• Ptolomy and Jupiter

• Whiston and Ditton

What year was Harrison born?

• 1715

• 1727

• 1693

• 1650

How did astronomers feel about Harrison's clock idea for solving the problem of longitude?

• They thought it was ridiculous because it would be too expensive to mass produce clocks

• They thought it was outrageous because it didn't require the intellect of lunar theory

• They thought it had promise and could be used in conjunction with the lunar theory

• They saw potential but were still very skeptical

What was one of Harrison's innovations?

• A brass and steel pendulum that aided in keeping time despite temperature changes

• Gears that could last for extended periods at sea

• A new clock face that revolutionized the way we tell time

• A vaccum that held out temperature changes

Where did William sail on the second test of H-4?

• Africa

• The United States

• Australia

• The West Indies

Which of Harrison's clocks run in the present day?

• H-1, H-2, H-3

• None of them

• H-1, H-2, H-3, H-4

• All of them

Who was famous for reducing the motion of the planets to a few equations?

• Leonhard Euler

• John Hadley

• Isaac Newton

• John Harrison

How long did Harrison spend building H-3?

• Five years

• Ten years

• Twenty years

• Six months