0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What is a backstaff?
A backstaff is a an early navigational instrument for measuring the altitude of the sun and hence calculating latitude.
How do you determine longitude and latitude with a chronometer and backstaff?
porn porn porn
Who invented the back staff?
"Captain John Davis invented a version of the backstaff in 1594"
What did john Davis invent?
John Davis invented the backstaff and the double quadrant. He is more famous for the double quadrant, which people actually called the Davis quadrant. However, he is more famously known for being an English explorer.
Is an instrument used to measure the position of stars.?
An Astrolabe. See the website www.astrolabe.org,or Wikipedia, or use Google books for a public domain encyclopedia. I own an old encyclopedia britannica, the 1903 edition and love it for answering questions such as this, or those related to woodworking, carpentry, masonry, or industrial machinery; e.g. what does an automatic pattern knitting machine or a jacquard loom look like?.historically several instruments were used to measure this angle, they include the quadrant, cross staff, the backstaff and the mariner's astrolabe.
The girl made a rainbow with a prism identify the verb?
Made?
How are cermaics made and how are they made?
Made
What is the difference between made of and made from?
"Made of" and "Made from" can mean the same thing. "That can is made from aluminum." "That can is made of aluminum." However, they can't be used the same in every situation. You can say: "That house is made of wood and made from workers." But you can't say: "That house is made of workers and made from wood."
Where was YouTube made?
It was made it was made on the Internet
Where was the Parthenon made and who made?
The Parthenon was made in Acropolis and Iktinos and Kallikrates made it.
Is glue human made or nature made?
it is man-made and made out of ponies
How was god made if he made the world and made life?
He was made by the big bang
