In the 12th
century some guy fond a mineral called lodestone and found it pointed too the north star so it faced north, so people used this mineral to create the crude compass and put it into the sea to find north.
Low friction so that weak magnet could move freely.
Early explorers did not have the same tools we have today. They would have used the sun as a navigational tool along with a compass. They would have had crude maps, boats, sailing winds and even the experience of trackers.
Difference between nymex crude and brent crude
Crude oil is crude..
crude boats
Crude Oil is hydrocarbon and it is mixture of carbon and hydrogen.
1 barrel of crude oil equals 42 US gallons of crude oil.
No,a Gyrosyn compass is a combination of a Magnetic compass and Direct reading compass.
boiling point of crude oil is depending on the main component in the crude oil itself, heavy crude for example has a higher boiling point from light crude.
compass
i have to be crude because you disobeyed me
crude oil is a petroleum