General relativity

Dark matter is matter that cannot be directly seen because it does not interact with light. This mysterious matter makes up the majority of mass in a galaxy. Although we cannot see dark matter we know that it is out there because we can see it effecting the motion of the stars in a galaxy and gravitational lensing. The first piece of evidence for dark matter is in the way we have observed galaxies moving. You would likely expect their behavior to replicate that of the Sun and the planets, with…

exist. To determine whether something is part of the present means that you have to find what exactly determines the present. The common objection for presentism is by the use of the Special Theory of Relativity, or more specifically the relativity of simultaneity. The Special Theory of Relativity is a well confirmed physical theory of the measurement of non-accelerating frames of reference in all inertial systems proposed by Albert Einstein. The basics of the theory is that in a vacuum the…

One concept that has interested is dark matter and dark energy. Dark matter is the thing that makes it possible for galaxies to exist. When astrophysicists and cosmologist calculated why the universe is structure the way it is, it became clear that there’s just not enough normal matter. The gravity of the visible matter is not strong enough to from galaxies and complex structures. The starts would more likely be scattered all over the place and not form galaxies. Therefore, cosmologist concluded…

Vladimir Lenin was a large figure in the revolution of the USSR and the future of Russia. Vladimir Lenin was born April 22nd, 1870 in Simbirsk, Russian Empire as Vladimir Ilyich Ulyanov (Владимир Ильич Ульянов). Some days later, he was baptized into the Russian Orthodox Church. He took on the alias Lenin in 1901 while doing underground party work. (http://www.biography.com/people/vladimir-lenin-9379007#early-years). He was born into a wealthy middle-class family, third of six children, along…

To experimentally measure the downward acceleration solely due to gravity at the surface of the earth and with negligible air resistance on a free-falling object, a piece of clear plastic with evenly spaced black bars, labelled as a “picket fence,” was suspended from a string and dropped through a Photogate sensor. This software is used to measure the actual acceleration of gravity to compare it to the value provided by literature review. The Photogate sensor transmits an infrared beam of light…

Have you ever needed to do a certain simple task, but wished there was a machine to do it for you? The purpose of a Rube Goldberg machine is to create a complicated system in order to complete a tiny, simple task. What is a Rube Goldberg machine you may ask? A Rube Goldberg machine is an over- engineered contraption that uses a chain reaction to accomplish simple tasks such as turning on the music, pouring a glass of water, etc. This specific Rube Goldberg machine’s task is to move the last…

Sarang Patel Mrs. Kopko Day of the Dead: Issac Newton Sir Isaac Newton was an English mathematician, cosmologist, scholar and physicist (depicted in his own day as a "characteristic savant") who is generally perceived as a standout amongst the most powerful researchers ever and a key figure in the logical upheaval. His book Philosophiæ Naturalis Principia Mathematica ("Mathematical Principles of Natural Philosophy"), first distributed in 1687, established the frameworks of traditional mechanics…

Ava Lilienthal Science Barcus 7-4 The Physics Behind Soccer Soccer really has a lot to do with science. From Newton’s laws of motion to the momentum of the person kicking the ball, the drag force and the magnus effect, and even the air pressure in the ball. It is harder than most people think. Next time you watch a soccer game, or play a soccer game, think about the science in the game. First, Newton’s Law’s are present when the ball is kicked. His first law, an object at rest stays at rest…

1. The Earth rotates from the…………………………… a) west towards east b) east towards west c) north towards south d) south towards north 2. The Earth orbits the Sun at a speed of………………….. a) 100,800 km/h b) 108,000 km/h c) 152,097,701 km/h d) 147,098,074 km/h 3. Tsunami can be cause of ……………… a) Volcano b) Avalanche c) Tornado d) Earthquake 4. Seasons happen because a) The earth’s axis is inclined by 66½° b) The earth’s revolution around the sun c) The rotation of earth d) United effect of (a) and…

Did you ever think on how the universe ever started ? It all started in total darkness. An astronomer named Edwin Hubble found out that the galaxies were moving farther away, he knew that by a telescope that he created and it is called the hubble telescope. When the universe exploded it began to spread really quickly and when it exploded the universe had a very high temperature when this happened. Which created formation of elements ,gravity,redshift ,doppler effect,CMB, many more . The big…