What Floats Your Boat?
Students use modeling clay, a material that is denser than water and thus ordinarily sinks in water, to discover the principle of buoyancy. They begin by designing and building boats out of clay that will float in water, and then refine their designs so that their boats will carry as great a load (metal washers) as possible. Building a clay boat to hold as much weight as possible is an engineering design problem. Next, they compare amount of water displaced by a lump of clay that sinks to the am
At the end of this unit you can explain a project on sorting waste for offices.
Diabetes - Eye Complications (Spanish)
This patient education program explains how diabetes affects eyesight, specifically the prevention and treatment of diabetic retinopathy. It also reviews eye anatomy, other eye problems, and their treatment. This resource is a MedlinePlus Interactive Health Tutorial from the National Library of Medicine, designed and developed by the Patient Education Institute.
Gay Liberation Now: global movements and transformations
Since the late 1970s, Sonia Corrêa has been involved in research and advocacy activities related to gender equality, health and sexuality. She is the founder of various non-governmental initiatives in Brazil. Between 1992 and 2009 she has been the research coordinator for sexual and reproductive health and rights at DAWN – Development Alternatives with Women for a new Era – a Southern Hemisphere feminist network. In that capacity, she closely followed United Nations negotiations directly
Public Policy, Equity and Growth: a panel discussion
This event is part of a celebration of 25 years on from the LSE project on Taxation, Income Distribution and Incentives run in STICERD by Sir Tony Atkinson, Mervyn King and Professor Lord Stern. The panel brings together a distinguished panel of experts to discuss what we have learned in the intervening period about how public policy can best be structured to support equity and growth. Professor Sir Tony Atkinson, is centennial professor in the Department of Economics at LSE. Peter A. Diamond wa
The Role of International Negotiations in Addressing the Climate Challenge
With frightening evidence for climate change mounting around the globe, from droughts and massive forest fires to melting glaciers and rising sea levels, you might think nations would wish to work together to meet such a grave threat. Instead, as U.S. climate negotiator
Todd Stern reports, there has been only modest progress interna
Investments in our Future: Exploring Space through Innovation and Technology
“I don’t remember Apollo at all,” confesses
Robert Braun, NASA’s chief technologist. “I feel really bad about it.” Nevertheless, he has spent a lot of time reading and thinking about the mission to the moon, and its significance not just for space exploration, but for the nation’s innovative edge and economy.
Some people believe the planet would be better off, at least ecologically, if humans had never evolved. These speakers offer grim evidence that human activities threaten to poison much of life on earth, but they also suggest some new methods for treading more lightly, and perhaps reversing some deadly trends.
“We are in d
A New Conversation with Jack Welch
Jack Welch has never been one to pussyfoot around when it comes to discussions of leadership, and he doesn’t break from form during a lively give-and-take with MIT Sloan Dean David Schmittlein and an audience of Sloan students.
Schmittlein starts with a series of questions involving the reasons why some top corporations
1 Introductory Remarks
Prof. Jocelyn Monroe, Assistant Professor of Physics, MIT; 2006-2009 Pappalardo Fellow
2 The Hunt for Dark Matter
Dr. James Battat, 2008–2011 Pappalardo Fellow (Dark Matter & Neutrino Physics)
The Standard Model of particle physics cannot account for 80% of the matter in the Universe. This mystery looms large over physics, and has stimulated an international program to identify dark matter. In traditional direct detection experiments, the putative signatures of the interaction of dark matter with a target nucleus are difficult to measure, and are easily mimicked by the vastly more abundant background e
3 Oxide interface: a Chance for New Electronics
Dr. Lu Li, 2008–2011 Pappalardo Fellow (Condensed Matter Experiment)
Like silicon in computer chips, interfaces between complex oxides are potential candidates for new functional electronics. Some interfaces between insulating oxides are conductive, and even superconducting. Transistors based on these interfaces demonstrate that electrons can be more effectively controlled with applied voltages, which provides a new way to make low-dissipation electronics. Moreover, magnetic moments of elec
5 Iron-based High Tc Superconductors: How Electrons Pair by Repulsion
Dr. Fa Wang, 2009–2012 Pappalardo Fellow (Hard Condensed Matter Theory)
In superconductors, electrons form pairs that can transport electricity without dissipation. This pairing requires attraction between electrons while the fundamental interaction between them is Coulomb repulsion. In conventional superconductors, the attraction is provided by the vibration of ions. But this is likely not the case in many unconventional superconductors, including the copper-based and the newly discovered
6 The End of Inflation
Dr. Mustafa Amin, 2008–2011 Pappalardo Fellow (Theoretical Astrophysics)
Inflation, a period of accelerated expansion in the very early Universe, provides an elegant explanation for the observed spatial flatness of our universe. It also provides a robust mechanismfor generating the observed initial conditions for the formation of large-scale structure. However, inflation must end, giving rise to a hot, thermal Universe by the time light elements get synthesized. How did inflation end? Ca
4 Genetic Demixing in Bacterial Colonies
Dr. Kirill Korolev, 2010–2013 Pappalardo Fellow (Soft Condensed Matter Theory & Biophysics)
The evolution of natural populations involves more than mutations followed by natural selection—the reshuffling of genes during genetic recombination, stochasticity, and spatial migrations are also important. The effects of fluctuations and spatial structure become especially pronounced when organisms spread to new territories because the number of organisms at the front of the expansion is typica
Crowd Computing and Human Computation Algorithms
Rob Miller, User Interface Design Group, MIT CSAIL
A Conversation with Nancy Hopkins
Nancy Hopkins, Amgen, Inc. Professor of Biology, talks about her life in biology, in a talk called "48 Years of Molecular Biology: 1963-2011." Part of the Conversations with Scientists series sponsored by the MIT Department of Biology and the Howard Hughes Medical Institute.
Power Cloths of the Commonwealth
RMIT Gallery's successful exhibition Power Cloths of the Commonwealth, was Australia's only cultural representation at the XIX Commonwealth Games in Delhi. Held from 25 September to 20 October 2010, the successful exhibition showcased key historical and contemporary works from around the Commonwealth, many of which have not been previously on public display. Power Cloths of the Commonwealth was opened by the Hon. Speaker of the Lok Sabha (Parliament) Shrimati Meira Kumar on 26 September 2010 at
Next steps After completing this unit you may wish to study another OpenLearn Study Unit or find out more about this topic. Here are some suggestions:
After completing this unit you may wish to study another OpenLearn Study Unit or find out more about this topic. Here are some suggestions:
2.2 The purpose of this activity For these short video extracts we have chosen to focus on two main viewpoints. Try not to look beyond the outline of the debate, for we are not expecting you to come to a conclusion about who is right and who is wrong – the issues are far too intricate for that. All you need to do is to recognise what the issues are and to be able to identify what arguments each side puts forward in support of its case. The key skill being developed is identifying the arguments used by various individ
For these short video extracts we have chosen to focus on two main viewpoints. Try not to look beyond the outline of the debate, for we are not expecting you to come to a conclusion about who is right and who is wrong – the issues are far too intricate for that. All you need to do is to recognise what the issues are and to be able to identify what arguments each side puts forward in support of its case.
The key skill being developed is identifying the arguments used by various individ