Light Absorption by Photosynthetic Pigments in Silver Beet Abstract The aim of the experiment was to determine the absorption of differing wavelengths of light by individual pigments in the vegetable silver beet. Pigments were extracted from silver beet leaves and separated into chlorophyll a‚ chlorophyll b‚ and carotene via chromatographs. Chlorophylls were then separated and an absorption spectra created using results obtained from a spectrophotometer. It was clear there were two distinct peaks
Premium Electromagnetic radiation Chlorophyll Light
Jacque Lazarus NT 1310 Unit 7 Exercise 1 Fiber Optics –Definitions Crosstalk – Electronics undesired signals or sounds‚ as of voices‚ in a telephone or other communications device as a result of coupling between transmission circuits. Waveguides - A system of material boundaries in the form of a solid dielectric rod or dielectric-filled tubular conductor capable of guiding high-frequency electromagnetic waves. FTTH – Fiber-to-the-home the fiber reaches the boundary of the living space
Premium
It’s all around us. Radiation is categorized into two groups: ionizing‚ and non-ionizing. Ionizing radiation consists of particles‚ gamma rays‚ or X-rays with sufficient energy to create ionization in the medium it passes through. It has enough energy so that while an interaction with an atom takes place it can withdraw tightly bound electrons from an atom‚ thus making the atom charged or ionized. It includes alpha particles‚ beta particles‚ and gamma rays. Ionizing radiation has made a large impact
Premium Ionizing radiation Cancer
does natural UVB radiation impact on the marine life? Ultraviolet-B radiation‚ also known as UVB‚ is a type of ultraviolet radiation forming a part of the electromagnetic spectrum (6). It is produced by high temperature surfaces in a continuous spectrum with the primary natural source being the sun. UVB radiation is harmful to living organisms and is only partially absorbed by the ozone layer of lower stratosphere(6). And due to ozone depletion in the recent decades‚ more UVB radiation reaches the surface
Premium Carbon dioxide Global warming Oxygen
Impact of Aerosols on Solar Ultraviolet Radiation and Photochemical Smog R. R. Dickerson*‚ S. Kondragunta‚ G. Stenchikov‚ K. L. Civerolo‚ B. G. Doddridge‚ B. N. Holben ABSTRACT Photochemical smog‚ or ground-level ozone‚ has been the most recalcitrant of air pollution problems‚ but reductions in emissions of sulfur and hydrocarbons may yield unanticipated benefits in air quality. While sulfate and some organic aerosol particles scatter solar radiation back into space and can cool Earth ’s surface
Premium Ozone Smog Ultraviolet
Effects of the Bottleneck and the Founders effect Cecil Smith GS102 Grantham University Online The bottleneck effect happens when something of a great devastation has happened‚ causing a great amount of people to lose their lives and leave behind very few people at the most. The bottleneck effect happens at random and can kill of a whole population and with it can also wipe out the gene pool by doing so. An example of the bottleneck effect would be something like a tsunami‚ or an earthquake‚ which
Premium
GREENHOUSE EFFECTS IntroductionThe greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases‚ and is re-radiated in all directions. Since part of this re-radiation is back towards the surface and the lower atmosphere‚ it results in an elevation of the average surface temperature above what it would be in the absence of the gases.[1][2] Solar radiation at the frequencies of visible light largely passes through the atmosphere to
Premium Climate change Global warming Carbon dioxide
What effects do mobile phones have on people’s health? November 2006 ABSTRACT This is a Health Evidence Network (HEN) synthesis report assessing the clinical effects of daily exposure to mobile phones in general populations. It addresses the impact on developing head and brain tumours‚ other morbidity-related outcomes and summarizes the biological effects of RF and microwave radiation. The report shows that the evidence available does not provide a clear pattern to support an association
Premium Mobile phone
EFFECTS OF CELLPHONES ON SOCIETY Today‚ cellphones are the most popular tool for communication in modern life. They become a “must have” that everybody cannot live without. Although cellphones have many positive effects for human life‚ there are also some negative effects. First‚ all cellphones are convenient and comfortable for users since they are small and light; therefore people can carry them every time and everywhere. Secondly‚ cellphones have been developing a lot of new thing‚ which
Premium Mobile phone Affect Effect
STUDENT’S ID: 2009528427 The table contains results of a study comparing radiation therapy with surgery in treating cancer of the larynx. | |Cancer Controlled |Cancer Not Controlled | | |Surgery |3 |5 |8 | |Radiation Therapy |6 |4
Premium Statistical hypothesis testing Statistical significance Null hypothesis