PHYSICS OF THE PAST One hundred years ago‚ in a poky apartment in Bern‚ Switzerland‚ Albert Einstein‚ then just a 26-year-old patent office clerk still working part-time towards his PhD‚ published five ground breaking scientific papers. Each of these papers‚ written during Einstein’s annus mirabilis ‚ has become a "classic" in the history of science: On a Heuristic Viewpoint Concerning the Production and Transformation of Light ‚ which discusses optical photons and photoelectric effects. Molecular
Premium Physics Quantum mechanics General relativity
errors. Accuracy is how close a measurement is to the actual measure. Precision is the agreement of repeated measures. 5. What determines how many figures are significant in reported measurement values? What would be the effect of reporting more or fewer figures or digits than are significant? All the numbers that can be measured plus one estimate number. It would give a slightly different result giving you a higher percent error. 6. In expressing experimental error
Premium Measurement
person should consume eight glasses of water a day. For this project‚ we are given the ability to create anything we wanted with the simple request that we highlight the affects it would have. If I could create anything in the world‚ I would pawn the invention of a machine that had the capability to filter and cleanse any scale of water at any given moment immediately. Now many people will say that I should create something beneficial to myself‚ such as a time machine‚ or a teleportation device of some
Premium Water
1. The first electronic digital computer (called ENIAC - the Electronic Numerical Integrator and Calculator) was developed in 1946 and contained over 18‚000 vacuum tubes. | 2. The leg muscles of a locust are about 1000 times more powerful than an equal weight of human muscle. | 3. The cosmos contains approximately 50‚000‚000‚000 galaxies. | 4. There are between 100‚000‚000‚000 and 1‚000‚000‚000‚000 stars in a normal galaxy. | 5. Sound travels about 4 times faster in water than
Premium Miles per hour Mile Earth
Yoyo is a toy that everyone has played at some point in their lives. Yoyo is more than twenty five thousand years old. It is the second oldest toy‚ after dolls. The yoyo was first documented to be invented in Greece with wood‚ metal and terra cotta.2 .The disks were decorated with the pictures of their gods. The yoyo moved to the Orient around 1800. The yoyo was used as a weapon in Philippines. Their version was large with sharp edges and spikes attached to a twenty foot long rope for flinging at
Premium Classical mechanics Force Kinetic energy
BAD EFFECTS OF CELL PHONE ON SOCIETY A report by the International Telecommunication Union (ITU) said there were about six billion cell phone subscriptions at the end of 2011-roughly one for 86 of every 100 people. Up to now‚ this number has continued to increase dramatically. This proves certainly that cell phone affects our society more strongly and more deeply in many aspects. No one can deny that cell phone is playing a very important and necessary role in our society because it not only
Premium Mobile phone
THE INVENTION OF PHOTOGRAPHY Before the invention of photography‚ images were painted by artists or were duplicated by using printing plates. An image made by a painter was unique of its kind and copies of it could not be produced. Similarly‚ printing was done by hand and it required a lot of time and skill. The need remained for a process to be invented that could produce images of fine quality as well as to duplicate them. This was achieved in the 19th century with the invention of photography
Premium Photography
Latest Invention: Cell Phone that Can Help Managers Watch Employees’ Every Step KDDI Corporation‚ Japanese telecommunications operator‚ has come up with a technology that can track the movement of a person and transmit the collected information back to the main office. The technology works by evaluating the movement of accelerometers‚ which are‚ by the way‚ found in nearly every cell phone. According to the researchers‚ the technology can identify different types of activities‚ including walking
Premium Mobile phone Mobile network operator Cellular network
Bad Effect Of Fast Food When you feel like eating something and think of food‚ the things come to mind first are the taste‚ odor or color. Those who have to look after their weight will think of the portion size‚ many others think of energy‚ fats‚ sugars‚ vitamins or minerals. But do you know that the food we eat may cause side effects and a list of disadvantages. We are not talking about spoiled or poor quality food. Freshly harvested or just cooked food may also cause side effects‚ some are
Premium Nutrition
matter physics has seen considerable growth‚ and both the journal and the field have flourished during this period. In this essay‚ I begin with some general comments about condensed matter physics and then give some personal views on the conceptual development of the field and list some highlights. The focus is mostly on theoretical developments. DOI: 10.1103/PhysRevLett.101.250001 PACS numbers: 01.30.−y The transistor was a hard act to follow. The 1956 Nobel Prize for the invention of the
Premium Quantum mechanics Physics Superconductivity