When was the GPS invented? The GPS project was started by the U.S. Department of Defense in 1973. The first prototype spacecraft was launched in 1978 and the full constellation of 24 satellites became operational in 1993….Global Positioning System. Constellation size Total satellites 77 Satellites in orbit 31 First launch February 22, 1978 Total launches […]
Do blackout curtains absorb sound?
Do blackout curtains absorb sound? Blackout curtains are simply thicker fabric with a liner on the back to keep sunlight or artificial light (such as street lights) from coming through. While this type of curtain is not suitable to block sound, they can help to absorb echo. How do I stop noise coming through windows? […]
How do you measure market efficiency?
How do you measure market efficiency? The simplest measure of efficiency is the optimised Sharpe ratio. This can be calculated over a finite time horizon, in a market with finitely many assets. Let us suppose we have n+1 assets, and that the risk free return factor (ie 1 plus the risk-free rate) is r. What […]
How hard is it to climb Mount Kenya?
Why are turtle eggs illegal?
Why are turtle eggs illegal? On many Central American beaches, poachers destroy more than 90% of sea turtle nests to sell the eggs into the illegal wildlife trade. The eggs are smuggled to cities where they are eaten as a delicacy in restaurants and bars. This wildlife crime is devastating for endangered sea turtles. Is […]
What is EBV EBNA IgG positive?
What is EBV EBNA IgG positive? The presence of VCA IgG antibodies indicates that an EBV infection has occurred at some time recently or in the past. The presence of VCA IgM antibodies and the absence of antibodies to EBNA mean that the infection has occurred recently. The presence of antibodies to EBNA means that […]
What does the phrase wrecking ball mean?
What does the phrase wrecking ball mean? a heavy metal ball swung by a crane to demolish a building. And now a wrecking ball stands outside, poised to demolish it. something that destroys the current situation. What is another name for wrecking ball? •Other relevant words: (noun) raze, unpick, bulldoze. Do people actually use wrecking […]
Who is Meyer Wolfsheim in real life?
Who is Meyer Wolfsheim in real life? Arnold Rothstein The character is based on real life gangster, Arnold Rothstein. About Wolfsheim, Gatsby tells Nick “he’s the man who fixed the World’s Series back in 1919” (72), something we know to be true of Rothstein. What is Meyer Wolfsheim known for? Meyer Wolfsheim is Jay Gatsby’s […]
What was the subject of the painting the lamentation?
What was the subject of the painting the lamentation? The Lamentation of Christ (also known as the Lamentation over the Dead Christ, or the Dead Christ and other variants) is a painting of about 1480 by the Italian Renaissance artist Andrea Mantegna. While the dating of the piece is debated, it was completed between 1475 […]
What is an open expression in math?
What is an open expression in math? A mathematical sentence makes a statement about two expressions. A closed sentence is a mathematical sentence that is known to be either true or false. An open sentence in math means that it uses variables and is not known whether or not the mathematical sentence is true or […]