PhysicsFossil Fuels vs. Alternative Energy Fossil Fuels considered to be less harmful than oil, but still limited in supply. Examples of Fossil Fuels: Petroleum (oil); Used to fuel vehicles and Coal (use in Powers electricity…
GeographyOrganic Ingredients Primary objective of this lecture is to present on Organic Ingredients. Organic molecules only absorb UV rays whose energy matches difference between electron energy levels. Different kinds of…
GeographyGood Ozone and Bad Ozone This lecture introduce on Good Ozone and Bad Ozone. Good ozone: In the stratosphere, absorbs 97+ % of solar UV, protecting life from harm. This “good” ozone shields life…
PhysicsTour of Ozone Hole Major objective of this lecture is to present on Tour of Ozone Hole. Dramatic loss of ozone in the lower stratosphere over Antarctica was first noticed in…
GeographyGeology of Venus Venus surface is similar to Earth and Mars – few impact craters, volcanoes, and evidence of tectonics activities. But no plate tectonics. The volcanoes of Venus is…
GeographyGeology of Mars Prime objective of this lecture is to present on Geology of Mars. The geology of Mars is the scientific study of the surface, crust, and interior of…
GeographyCarbon Dioxide Cycle The mechanism by which Earth self-regulates its temperature is called the carbon dioxide cycle, or the CO2 cycle for short. If Earth warms up a bit,…
GeographyGreenhouse Effect on Earth Earth’s atmosphere is slightly warmer than what it should be due to direct solar heating because of a mild case of greenhouse effect. The ground is…
GeographyPresentation on Greenhouse Gases General objective of this lecture is to present on Greenhouse Gases. Greenhouse gases absorb infrared radiation and prevent it from escaping to space. Carbon dioxide, methane, and nitrous…
GeographyGreen House Effect The Earth’s surface thus receives energy from two sources: the sun & the atmosphere. As a result the Earth’s surface is 33C warmer than it would…
PhysicsSpecial Theory of Relativity By Albert Einstein Special Theory of Relativity is Albert Einstein’s theory of how light behaves in relation to different perspectives. Suppose we want to find the length of an…
PhysicsSpecial Relativity for Dummies This lecture briefly explain on Special Relativity for Dummies in terms of Einstein’s Special Relativity. Einstein explained that when two objects are moving at a constant speed as…