Research Paper on Diode

People were so full of curiosity on how the light bulb worked. It led to everybody wanted electricity in their homes, and it began to evolve over time to what we have in this time.

In 1879, Thomas Edison invented the first incandescent light bulb in a competitive community. The invention of the electrical light bulb was built on commutative work done by previous scientists and researchers. Edison was invited to William Wallace workshop to examine the Wallace’s prototype. Edison thought that the prototype has something wrong, “I believe that I can beat you making the electrical light. I do not think that you are working in the right direction” Edison told Wallace [1]. Therefore, he decided to do make his own electrical light and there race was started. After a week of his visit to Wallace workshop, Edison was already invented the first light bulb. The success that was achieved by Edison led to a big success for his company,

The most important and influential invention in history is the light bulb. The light bulb was created by Thomas Edison in 1879. It is used in many different ways today. It is used to help us see during the day and when it is dark out. We use the lightbulb at home, work, school, stores, and even at gyms. Even though Edison was not the one who came up with the idea of the lightbulb, he is credited with making the first successful one. There were twenty-three other people before him who have tried numerously and failed. It took Edison a year to create the light bulb. In that year, he experimented with over 1,400 fibers until he tried cotton fiber. Cotton fiber allowed a light bulb to last 1,500 hours compared to forty hours.

Gas lighting had many positives like it provided more light at night for people to see better around the streets, homes, workplaces and also schools. This invention pushed change and new inventions. As the first gas light bulb was created, inventors pushed to create similar/new products.and gaslight technology spread quickly until a few years later Thomas Edison invented the first electric light that is still used today.

Figure 3 plots the relative overall response of the Spectronic 20, the relative response of a phototube, and the relative lamp intensities as a function of wavelength. The Spectronic 20 response curve shows a maximum relative response at 512 nm with a transmittance of 88.3%. The phototube response curve shows a maximum relative response at 400 nm with a transmittance of 100%. This means the light source used in Part A emitted green light stronger than any other wavelengths and the phototube

When the first modern light bulb that ran on electricity was created by Thomas Edison who had the invention to be patented in his name on January 27, 1800(Thomas Edison's Patent Application for the Light Bulb (1880) para. 1), people finally had a way to light their homes

The light bulb was first invented by Thomas Edison on December 31, 1879. Before the people were able to have access to a light bulb they revolved around the sun. People woke up and went to work when the sun rose, and they also went home and went to sleep when the sun went down. With the invention of the light bulb people were able to have extended work hours and didn’t have to solely rely on the sun. Today we have been able to put light bulbs in most of the items that we use on a daily basis. People in today’s society rely on a man made light just as much as they rely on the sun. Without a light people would not be able to travel during the night. We would not be able to function in today’s time without a

How does the power output and the number of photons that are emitted depend on the color?

So one of the things that was invented that have been reinvented is a traffic light. The traffic light was invented in the 1920s by an inventor named William ports. He used the three main colors green, amber, and red. The first traffic light was put

Have you ever wondered were led lights came from..? well I Daniel Mcfarland was born in Pennsylvania on February, 27 1869 and attended Lehigh University for college from 1884-1889. I studied electrical engineering, After experimenting with different sources, I started using glow discharges to produce light. In 1986 I had devised a glow discharge lighting system, creating an extension to the Geissler tube. The lamp utilized nitrogen and carbon dioxide as the luminous gas because they emitted a soft white light. My technique was the first commercially variable light source based on gas discharge instead of incandescence, and it's considered the predecessor to contemporary neon and fluorescent lighting.

This occurs when a product is generated in the excited state and then relaxes to the ground state in which a photon is emitted. When the electron relaxes, energy is released as a vibration and heat. Electrons in the same orbital are paired and must have opposite spins. There are two types of electronic states: singlet and triplet. In a singlet state, the spins of all of the electrons are paired while in a triplet state, the spins are flipped or unpaired. Phosphorescence and fluorescence occurs when electrons relax from the singlet and triplet states and emit visible light. Fluorescence emits light at a longer wavelength than it is absorbed. This process is rather fast as the light appears to be a blue-green color. Phosphorescence is very similar to that of fluorescence. However, in phosphorescence there is longer interval between the excited and ground states since the flipped spin has to flip back. This flipping of spins requires energy which leads to a less energetic triplet state compared to that of the singlet state. The longer interval in phosphorescence also sometimes results in a red color and a longer excited state period. Chemiluminescence also has other usages such as its ability to identify when blood is present. The luminol turns blue-green when the alkaline solution is exposed to

Numerous metals and different substances radiate splendid shades of obvious light when they are warmed. The colors originate from electrons moving between energy levels. The energy gaps between their electron shells relate with the energy of the colour they give off. so the energy of every colour of light matches the energy gaps between electron shells in different atoms. Electrons are orchestrated into energy levels.

Then in 1870 his first discovers were published in heat and gases. He then discovered the phenomenon of the ability to occupy less space of water by the spreading of oil drops on water. When he accidentally placed a piece of fluorescent mineral covered cardboard near his experimental set he noticed when the cathode ray was turned on the cardboard started to glow in the dark. He then intentionally did an experiment on this miraculous discovery.

Solids and liquids glow at very high temperatures. To see these glow, you need to look at using a spectroscope. When you do look through the spectroscope, you see a band of colors that resembles a rainbow. The reason why this happens is because the atoms are packed closely together. In the early 1900’s, Niels Henrik David Bohr created an explanation why the lines of the spectrum are the way they are. Niels Bohr was a Danish born physicist who is world renowned for his works of quantum physics. Bohr proposed that electron that orbits the cloud of protons and neutrons has a set to have a certain energy. When the electron occupies the energy level of lowest energy, it is in its ground state. If an electron occupies a higher energy levels then

Capacitance-voltage (C-V) characterization is a non-destructive technique which determines the charge distribution and identifies the presence of interface states in semiconductors when the applied biasing voltage participates in the carrier capture and emission at interface traps [14,15]. Such traps are charged leading to the production of a dipole layer at the interface. Small modulation in the AC bias will change the barrier height, and the position of the Fermi level will shift relative to its equilibrium position. Thus, the characteristics of the device will be changed [15,16].