Photon

The high light intensity was 700 micromoles of photons/m2/sec, while the low light intensity was 30 micromoles of photons/m2/sec. The average change in dissolved oxygen is the dependent variable. Light intensity, micromoles of photons/m2/sec, is the independent variable. Two dependent experimental variables, algae high light intensity and algae low light intensity, were compared by means of…

radiations can be considered as a stream of photons. Photons are particles of zero mass and charge that travel in a wave like pattern at the speed of light. Each photon has a certain quantity or pattern of energy. Gamma rays have the smallest length wave and their photons have the most energy of all the waves in the electromagnetic spectrum. They are generated by the decay of radioactive atoms and nuclear explosions. The high energy of gamma ray photons means they can pass through most…

The unique composition and purity of as-deposited SnS2 thin films prepared with different precursor solution volumes from 5 ml to 25ml were determined by EDX analysis as shown in fig 5, which brought out the presence of Tin and Sulfur as elementary components. Two different peaks were observed in the spectrums from fig 5 relevant to the tin and sulfur. The EDX spectra show that the weight percentage for the film prepared at the precursor solution volume of 5 ml is 36.8% and 63.2%, which is…

Objective: To understand the function of an enzyme when it undergoes different conditions such as temperature, PH, and concentration of the enzyme. Introduction: In our lab “Enzyme Action” we were testing the enzyme reaction with different substrates. In our lab we tested 3 different enzymes and substrates to find out when they are at the highest potential. Enzymes are necessary for life because they keep our bodies chemical reactions at a normal pace. Enzymes have the ability to keep a human…

energy level. For the atoms to return to a lower energy level they need to decrease the energy of the atoms, returning back to normal. When they are moving to a lower energy level, the energy that excited them is released in tiny particles called photons. The light that phosphorescence creates can last for seconds, or hours. Between the ground level, and the excited level, is a level of intermediate energy. This level is called a metastable level, or an electron trap. Transitions between the…

acts indirectly in photosynthesis by transferring photons that it absorbs to chlorophyll a. The chlorophyll contain a porphyrin ring, which is a stable ring-shaped molecule that is around electrons that move freely. Because they can move around freely, the ring can gain and lose electrons easily. Which allows it to provide energized electrons to other molecules. This is the process by which chlorophyll captures the energy of light. The captured photons are used to “excite” electrons produced…

bright regions. Optical tweezers as they are called, use the buffeting of photons to focus light beams to push or pull particles. It mainly depends on the beams of light are focused. “When a stream of light hits an object, it tends to move in the direction that the light is. However, some recent research has shown that with the right geometries, small microparticles can move in the opposite direction of the stream of photons.”…

The Physics of PET Scans All elements are composed of atoms, which are composed of small particles called protons, neutrons, and electrons. The nucleus of an atom is made of a tightly packed collection of protons and neutrons. You would think that with positively charged protons being packed so closely together the nucleus would fall apart, however this is not the case. There is an attractive force called the “nuclear force” which is able to overcome the repulsive force of the adjacent…

Soon, Compton became more involved with human problems, his interest soon led him to the greatest challenge of his life and leadership responsibility. During World War II, physics research had changed drastically, especially for Compton. Compton became involved in the “uranium problem” that led to the evolution of nuclear reactors and soon after, the atomic bomb. On November 6th, 1941, Compton introduced a report on the military uses of atomic energy with the help of physicist, Ernest O.…

The Big Bang is the most widely accepted theory about how our universe first began. This theory was first proposed by Belgian priest Georges Lemaître in the 1920’s. It suggests the universe was once condensed into a space equivalent to less than a grain of sand and expanded to billions of kilometers wide in about a second producing incredible amounts of heat. Everything you see is from that rapid expansion. That’s difficult to imagine, however, 3 major pieces of evidence support this; Hubble’s…