What is a Gnomon
Center stick on a sundial
Why sundials are bad
different times by location, only works in daytime
What is a water clock good for?
What did months depend on?
Who needed months to be seasonal?
Who had different calendars based on citites?
How did Greece fix their calendars?
Who were the first to compromise between lunar and solar?
What was done to fix it?
Extra 3 week month
Where was it put?
In the middle of february
How did Romans tell the day of the month?
Distances from Ides at the beginning of the month, Kalens in the middle, or Nodes at the end
Other way to separate days?
Normal, Festival, or Government Business
Whos steam engine is it?
Problem with Herons engine?
No way to harness power, may have just been a demo.
What did scientists claim was the conclusion from the bag of mixed fluids?
Natural order of the world
Who used a metal sphere instead of bag?
What conclusion did he come to from the sphere with straw?
If you blow air in and hold it, when you let it go air will come back out
What evolved from the metal sphere?
Thermometer by just adding bowl with liquid
How did the sphere pressurization probably happen?
Left metal sphere in sun and noticed water coming out
What probably evolved from the pressurization of the metal sphere?
pump that could be turned on or off by tilting the nozzle
What were some things about the pressure fire hose thing?
Motion contrary to nature and recoil when nozzle only slightly tipped
Who said natural motion was in a straight line?
What proves Aristotle wrong?