1.1 Constructing the H-R diagram

Three properties which are suitable for comparing stars are temperature, luminosity and radius. However, we don't need all three.

Question 1

Why not?
Author(s): The Open University

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Pinterest: Onlineprikbord
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Vanuit this website Kan JE alles wat JE vindt op Het Internet 'pinnen', wat betekent dat-JE Het Kan bijhouden. Het is EEN-onlineprikbord waarin JE Mappen Kan Maken en alles Goed Kan organiseren en OOK Kan Delen voldaan Anderen. ALS JE …


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Doctoral Career Design I F-E
As a training course of the Academic Leaders Program (ALP) primarily targeted at D1 and D2 students, these lectures will cover career design strategies for future scientists and professionals working either in academia or industry. The prospects of an international career will be discussed based on some particularities of the work and research environments in different countries, and suggestions will be given about practical ways of starting on this career path. アカデミックリーダー
Author(s): TOKYO TECH OCW

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The Hoare Govett Small Companies Index Report, published by RBS
Mid and small-cap companies had their best share price performance since 1977, according to new research by Professors Dimson and Marsh
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Weekly ISS Recap - Jan. 9-13, 2012
The weekly International Space Station video recap for Jan. 9-13, 2012.
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In Thrall to the Federal Reserve

Perhaps no economic pronouncement in history has been anticipated, discussed, predicted, dissected, and reported like the Federal Reserve’s momentous decision today not to raise interest rates.

The outpouring of relief witnessed today by the financial press is nothing short of cathartic. Fear and anxiety, built up over months, is replaced by relief, even euphoria.

This is not to say the hype is unwarranted. On the contrary, the decision to raise interest rates even just 25 b
Author(s): Jeff Deist

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2008 K R Narayanan Oration Why Environmentalism Needs Equity
"Why Environmentalism Needs Equity: Learning from the environmentalism of the poor to build our common future". Ms Sunita Narain, Director of the Centre for Science & Environment; Director of the Society for Environmental Communications; and publisher of the fortnightly magazine 'Down to Earth', has been with the Centre from 1982 and has worked hard at analysing and studying the relationship between environment and development, and at creating public consciousness about the need for sus
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China’s Development and Managing its Environmental Responsibilities
In this panel discussion, members will explore the interaction between China's economic development and it'd environmental responsibilities, from a range of social, political, environmental and economic perspectives.
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SMU Alumnus Blake Mycoskie starts coffee company
SMU Alumnus Blake Mycoskie, founder of TOMS Shoes, announces the start of TOMS Roasting Company, which will give one week of clean water to a person in need for every bag of coffee you buy. For every pair of shoes the company sells, it gives a pair of shoes to needy children. Since the start of the company in 2006, it has donated more than 10 million shoes. With a similar philosophy, TOMS launched TOMS Eyewear in 2011.
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Volkswagen: Requiem for a Dream?
Crisis management is only the first step for Volkswagen. Whether or not the company bounces back depends on its ability to change its culture.
Author(s): Gilles Hilary, INSEAD Professor of Accounting and

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Tribute Warsaw Uprising 1944
Video shows pictures of the war, the people, and the effects of the war. 63-day struggle to liberate World War II Warsaw from German occupation. Undertaken by the Armia Krajowa (Home Army), the Polish resistance group, at the time Allied troops were breaking through the Normandy defenses and the Red Army was standing at the line of the Vistula River.
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The Declaration of Independence
This is the second part of "A Powerful Performance." Here, the
Declaration is read by many popular actors, including Mel Gibson,
Michael Douglas, Whoopi Goldberg, Winona Ryder, and others. To hear it
read with such zeal is very inspiring. Think of this document whenever
you think of the role of government.

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The week ahead: Is Israel tired of Bibi?


Author(s): The Economist

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Earth Sciences at Cambridge - Trailer
The full film can be accessed at: www.youtube.com/watch?v=sUj4as55658 One of the great strengths of the Natural Sciences Tripos is that it gives undergraduates a chance to try subjects that they might not have encountered before. Earth Sciences is one of these, with many school pupils having only a peripheral experience of the subject from their geography lessons. We decided to make a film showcasing many of the important themes of Earth Sciences, illustrating the scope and breadth of the subje
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News #220 - Give Us Your Feedback, Win 1 Free Japanese Learning Product
Did you know that a lot of your favorite features and lessons were once requests by users just like you? The Innovative Language 101 App, Custom Lists, Season Vocabulary, the Dashboard – these were all user requests. So, your feedback matters. In fact, it’s time for our annual survey, and we’re thanking you with 1 [...]
Author(s): JapanesePod101.com

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2.5 Sodium (Na), chlorine (Cl) and potassium (K)

The element sodium is a soft silvery metal and the element chlorine is a greenish gas that is poisonous to humans and many other animals. Yet when these two elements are combined together in a compound called sodium chloride, the properties are quite different. Sodium chloride in its solid form is composed of white crystals and we call it salt. When salt dissolves in water, the constituent sodium ions, Na +, and chloride ions, Cl , become separated. Both of these ions
Author(s): The Open University

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Power and Order, Peace and War: lessons for Asia from 1914-18 [Audio]
Speaker(s): Professor Hugh White | Could it all happen again? Professor White will argue that imagining a new regional order to fit the fast-changing realities in Asia will make war less likely. Hugh White is Professor of Strategic Studies at the Australian National University and author of The China Choice. Robin Archer is the Director of the Postgraduate Programme in Political Sociology at LSE. The Ralph Miliband Programme (@rmilibandlse) is one of LSE's most prestigious lecture series and see
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2 Legal requirements of health and safety in the UK

The Health and Safety at Work etc. Act (HSWA) 1974 states that:

  • It is the duty of every employer, so far as is reasonably practicable, to ensure the health, safety and welfare at work of all employees (this includes students).

  • It is the duty of every employee while at work to take reasonable care of himself (herself) and of other persons who may be affected by his (her) acts or omissions at work.

  • The employees must co
    Author(s): The Open University

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Scottish Environment LINK
Scottish Environment LINK is the forum for Scotland's voluntary environment organisations. There are over 30 member bodies representing a broad spectrum of environmental interests with the common goal of contributing to a more environmentally sustainable society. The site includes information on LINK member bodies; parliamentary briefings, and information on specific topic areas such as biodiversity, climate change, and marine. The site also comprises information on the organisation and its sist
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Wildlife and Countryside Link
Wildlife and Countryside Link brings together environmental voluntary organisations in the UK united by their common interest in the conservation and enjoyment of the natural and historic environment. The site includes information on how Link operates; the member organisations; the Working Groups and Task Forces; and reports and other documents (available in .pdf format).
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