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Earths Magnetic Field discovered
The Earths magnetic field was discovered m William Gilbert in the begining of the 1600's. Its a Magnetic field that exstends from the earths interior, to where it meets the solar wnds a group of fast moving charged particles coming from the Sun. Using the North and south poel a compass can be used for navigation as the poles do attract and repel magnets and these alter very little and so are very reliable. Its like having a Bar magnet at the center of the earth. -
Inertia
Discovered by Galileo Galilie in 1613.
Inertia is the resistance of any physical object to any change in its state of motion, including changes to its speed and direction. It is the tendency of objects to keep moving in a straight line at constant velocity. The principle of inertia is one of the fundamental principles of classical physics that are used to describe the motion of objects and how they are affected by applied forces. Inertia comes from the Latin word, iners, meaning idle, sluggish. -
Snell's Law
Snell's law is n1sinθ1=n2 sinθ2
it tells you depending on the density of a mererial the angle that the light ray will be once projected through two different medias. It can show how light acts! "n" is the density of the meterial compared to air or which equals 1. Dutch astronomer Willebrord Snellius descovered the law. -
Pascal's Law
Pascal's law or the principle of transmission of fluid-pressure is a principle in fluid mechanics that states that pressure exerted anywhere in a confined incompressible fluid is transmitted equally in all directions throughout the fluid such that the pressure variations (initial differences) remain the same.The law was established by French mathematician Blaise Pascal. This principle is stated mathematically as:
P = pg (h) -
Hook's Law
Hooke's law is a principle of physics that states that the force needed to extend or compress a spring by some distance is proportional to that distance. The law is named after 17th century British physicist Robert Hooke. The exsperiments are often involved in using springs and adding weights the spring and measuring exstention of the spring. springs constance is the amount the meterial moves when 1N is added to the meterial and the units are N/cm -
Laws of motion
wton's laws of motion are 1: and object will stay stationary or in a uniform fassion unless another force is acted upon it. 2: force= Mass x Acceleration so the larger the mass the mre force etc. 3: every action ahas an equal and opposite reaction so he ground when gravity pulls you to it you push the ground down and the ground pushes back. -
Conservation of mass
The law of conservation of mass, or principle of mass conservation, states that for any system closed to all transfers of matter and energy (both of which have mass), the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed. Hence, the quantity of mass is "conserved" over time.
Antoine Lavoisier's discovery of the Law of Conservation of Mass led to many new findings in the 19th century. -
Atomic theory
In chemistry and physics, atomic theory is a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms. The current theoretical model of the atom involves a dense nucleus surrounded by a probabilistic "cloud" of electrons. The thory was created by John Dalton. -
Kinetic energy
In physics, the kinetic energy of an object is the energy which it possesses due to its motion.[1] It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body in decelerating from its current speed to a state of rest.
Descovered by Thomas Young -
Electrical resistnce discovered
Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points.
The law was named after the German physicist Georg Ohm, who, in a treatise published in 1827, described measurements of applied voltage and current through simple electrical circuits containing various lengths of wire.
Discovered by Georg Simon Ohm -
Doppler effect
The Doppler effect , named after physicist Christian Doppler, who proposed it in 1842 in Prague, is the change in frequency of a wave (or other periodic event) for an observer moving relative to its source. It is commonly heard when a vehicle sounding a siren or horn approaches, passes, and recedes from an observer. Compared to the emitted frequency, the received frequency is higher during the approach, identical at the instant of passing by, and lower during the recession. -
Conservation of energy
In physics, the law of conservation of energy states that the total energy of an isolated system cannot change—it is said to be conserved over time. Energy can be neither created nor destroyed, but can change form, for instance chemical energy can be converted to kinetic energy in the explosion of a stick of dynamite. discovered by William Thomson and Julius Robert von Mayer -
Radioactive decay
Radioactive decay, also known as nuclear decay or radioactivity, is the process by which a nucleus of an unstable atom loses energy by emitting ionizing radiation. A material that spontaneously emits this kind of radiation—which includes the emission of alpha particles, beta particles, and gamma rays—is considered radioactive.
Discovered by Antoine Henri Becquerel -
Big Bang theory Monseigneur Georges Henri Joseph Édouard Lemaître
The Big Bang theory is the prevailing cosmological model for the early development of the universe. The key idea is that the universe is expanding. Consequently, the universe was denser and hotter in the past. Moreover, the Big Bang model suggests that at some moment all matter in the universe was contained in a single point, which is considered the beginning of the universe. Modern measurements place this moment at approximately 13.8 billion years ago. -
Neutron discovered by Sir James Chadwick
The neutron is a subatomic hadron particle that has the symbol n, Neutrons have no net electric charge and a mass slightly larger than that of a proton. With the exception of hydrogen-1, the nucleus of every atom consists of at least one neutron as well as one or more protons. Protons and neutrons are collectively referred to as "nucleons". -
Manhattan project
The Manhattan Project was a research and development project that produced the first atomic bombs during World War II. It was led by the United States with the support of the United Kingdom and Canada. employ more than 130,000 people and cost nearly US$2 billion (about $26 billion in 2014 dollars). -
Pinon discovered
In particle physics, a pion (short for pi meson, denoted with π). Each pion consists of a quark and an antiquark and is therefore a meson. Pions are the lightest mesons and they play an important role in explaining the low-energy properties of the strong nuclear force. -
Higgs boson particle discovery
The Higgs boson or Higgs particle is an elementary particle initially theorised in 1964, discovery was announced at CERN on 4 July 2012. The discovery of a Higgs boson should allow physicists to finally validate the last untested area of the Standard Model's approach to fundamental particles and forces, guide other theories and discoveries in particle physics, and potentially lead to developments in "new" physics.
