phase diagrams
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The ideal-gas law is introduced, and the rate of momentum transfer from the gas molecules to the vessel walls is related to pressure. The concepts of phase diagrams and phase transitions are also introduced, and they are explored with fire extinguishers, boiling water, and cooled balloons filled with air. The ideal-gas law holds (approximately) when you have only gas; it doesn't hold whenever there is any liquid present. Professor Lewin us...more
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Jung talks about the five different phases that a start-up will entail in its journey from inception to transition. Phase one is the start-up and the inception. Phase two is a period of growth. Phase three is the unfortunate setback that every venture will invariably face. Phase four is a stage for rejuvenation. The fifth and final phase is a transition for either you as an entrepreneur or the company overall, he says.
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Jung talks about the dark phase in a startup where entrepreneurs begin to question everything, including themselves. This is an important phase as it tests you, your own sense of perseverance and loyalty to yourself, he says. An entrepreneur has to be prepared for this phase as every company will eventually experience it, he cautions.
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In this lecture, Professor Freeman explains the logic behind American and British military strategy during the early phases of the Revolution. First, she discusses the logistic disadvantages of the British during the war: the difficulties shipping men and supplies from more than three thousand miles away; the vast expanse of countryside with no one central target to attack; difficulties in recruiting British soldiers to fight in America; a...more
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Why work from expansion is the area under the curve of a PV-diagram.
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Today's lecture concludes Professor Freeman's discussion of the four phases of the Revolutionary War. America's victory at the Battle of Saratoga in 1777 marked the end of the third phase of the war, and led to a turning point in the conflict: France's decision to recognize American independence and enter into an alliance with the fledging nation. Although the British made one final attempt at reconciliation in 1778 with the Conciliatory P...more
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Professor Sylvia Ceyer explains the steps required to create a Lewis structure, using the cyanide ion and thionyl chloride as examples. She discusses formal charge within a molecule, skeletal structure of chain molecules, and resonance structures using the nitrate ion as an example.
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Specifict heat and phase changes: Calculating how much heat is needed to convert 200g of ice at -10C to 110 degree steam.
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Williams believes that podcasting has just begun and that it is going to grow in the coming years. He explains that people are now only in the 'geocities' phase where they know how to access content but do not know why to do so or do so on an ongoing basis.
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Jung talks about one of the biggest challenges in the growth phase of a startup. Releasing and disseminating control is very essential for scaling companies. He explains this fact in detail and illustrates its importance from his personal experience.
