-
360
Aristotle
B.C.
Concerned the idea that atoms moved through empty space. He had ideas that denied the existence of atoms. This went on to believe for 2 thousand years. -
410
Democritus
B.C.
He believed that matter ws made up of tiny indidual atoms. He believed that atoms could not be created, destroyed, or further divided. -
Microscope
The microscope was first discoverd by Zacharias Jasen and his father. They began experimenting with lenses, then put them into tubes and discovered a very important object in todays world. -
Thermoscope
The inventor of the thermoscope was Galileo Galilei, but he didn't fully invent the full thermometer. This was one without a scale. -
Car
The first automobile to function from steam power was built by Nicholas Joseph Cugnot. -
Antonie Lavosier
Known for his great experimental skills. He was the first to use the balance in the right way. Very imporant Chemist. -
Amadeo Avagardo
He was best known for his hypothesis: that equal volumes of different gases contain an equal number of molecules, provided they are at the same temperature and pressure. -
Joseph Proust
One of his highly known things to his name was the Law of Constant Composition. This was stated that chemical compounds always combine in constant portions. -
John Dalton
All matter is composed of extremely small particles called atoms. He marked the development of the modern time atomic theory. He said that all atoms of the same element are identical, atomes cannot be created or destroyed, and in a chemical reaction atoms are sepreated, combined, or rearranged. -
Telagraph
This made it possible for long distance calls to be made. The inventor was Samuel Morse. This worked by electrial currents being sent over wires at a station. -
Madame Curie
Conducted an electrometer for measuring low electric currents. Proved that electrical affects of uranium rays are constant. -
J.J Thomson
Began a series of cathode ray tube experiments to determine the ratio of its charge to its mass. He was able to find the charge to mass ratio of the charged particles. This meant that there were particles smaller than atoms. He therefore identified as an electron. -
Henri Becquerel
He had discovered radioactivity, which then tied to the discovery of X-Rays by William Roentgen. -
Max Planck
Max is known for the quantum theory. The quantum theory is the physics that describes the nature and behavori of matter and energy on the atomic and subatomic level. -
Airplane
Wiibur and Orville Wright were brothers were the first to make a small flight in the first powered aircraft, It was called the Kitty Hawk. -
Wiliam Crookes
He became the first person to discover the televison by the inventions of the cathode ray. The televsion and computer screens are formed when the cathode strikes light-producing chemicals that coat the back of the screen. -
Robert Millikan
He determined the charge of an electron. He also determined that the mass of an electron is very small. -
Henry Moseley
He discovered that the atomic number was increased by one when elements of an X-Ray spectrum moved the same amount each time. -
Neils Bohr
He developed what is called the "Bohr" atom. He proposed that energy levels of electrons are discrete and that the electrons revolve in stable orbits around the atomic nucleus but can jump from one energy level to another. -
Albert Einstein
Created most theories that had to do with light, energy, and even matter. -
Louis deBroglie
PhD thesis he postulated the wave nature of electrons and suggested that all matter has wave properties. -
Werner Heisenberg
He is one of the key people in the quantum mechanics. He was also know for his ideas to be the "nucleous" of the therome. -
Erwin Schrodinger
He designed an equation that was used for the quantum state system. -
Ernest Rutherford
Desgined an expertiment to see if alpha particles would be deflected as they passed through a thin foil of gold. They later realized that a few of the alpha particles were deflected at very large angles. He then latered realized that the nucleous containted positive charged particles in protons. He then found that neutron contained neutral particles. -
James Chadwick
James discovered the neutron. He was awarded a Nobel Prize award. -
World War II
US, France, Soviet Union, China, and Germany (Nazis) were all apart of this war. This lasted from 1939-1945. The Holocaust was also brought up in ths time period. -
Internet
At this time the Soviet's launched the first ever satellite into orbit. This wasn't much of a sucess due to poor radio connecntion, but it was the first lauched one into orbit. -
Cell Phone
Motorola was the first company that had put together a cell phone on the go. The inventor was Martin Cooper and executive of the Motorola company. -
Roll-Film Camera
Inventor of the popular roll-film camera is George Eastman, He invented the popular Kodak. -
Laptop
Invention was by Adam Osborne. He ran the first laptop at $1,795.
