How Do Changes in the Earth's Lower Atmosphere Affect Us? - Continued
How do changes in Earth's lower atmosphere affect us? (continued) Jeff Thayer – University of Colorado continues the discussion of How do changes in Earth's lower atmosphere affect us? We are so dependent on our space assets, our satellites, cell phones and GPS. The atmosphere breathes and the satellite senses these changes and is impacted by it. We are very Earth centric, so we are just beginning to explore all there is of space. Run time 03:14.
Learn about Fuel Cell Technology
Many researches have been working on renewable, clean energy sources. This particular study shows how hydrogen may some day replace gasoline to fuel our vehicles with zero emission of fuel cells. Learn about real world testing of this fuel cell technology. Run time 01:50.
The Intel 386 Story for Kids
[Recorded Feb 4, 2009] Today, many American teenagers enjoy a life enriched by an almost pervasive level of technology. Teens live surrounded by laptop computers, gaming systems, cell phones, and DVD and MP3 music players. All of these technologies have been made possible through increasingly smaller, cheaper and more powerful microprocessors often developed and sold by Intel. In this lecture, Professor Richard Tedlow targets his talk at teenagers to explain a part of the microprocessor technolo
School Safety And Technology: Important Issues for All Schools
Beware of the ad that starts the video.
There are many issues that every school needs to address. Especially important is the privacy issues and what happens in an emergency and the lines are blocked from administration use
These issues are addressed in this short video:
How can cell phones impact school safety?
How can digital cameras impact school safety?
How can computers pose a threat to school safety?
What steps should schools take to protect s
Cell Phone Facts : How Do Cell Phones Work?
Beware of the ad at the beginning. Very political. Cell phones work by transmitting a signal to a tower, which in turn sends signals to either land lines to other towers. Find out why cell phones have trouble and how they work. World's worst artist does not help.
Deconstructing A Television Commercial: Media Literacy
Here is a classic mobile (cell) phone advertisement, which can be incorporated into media literacy instruction to teach the techniques of persuasion as well as the techniques of production. I have created a companion lesson plan which can be found here: (run time :59)
Parts of a Plant Cell
This short video explains each of the organelles inside a plant cell and especially addresses the organelles that differ from an animal cell. The video also briefly explains photosynthesis while discussing the chloroplasts in a plant cell. Run time 02:56
Plant Cell Motility and Laser Microsurgery of Cytoplasmic Strands
Plant cells are shaped by rigid cell walls. Osmotic forces press the plasma membrane tightly against these walls. The walls can be removed with enzymes. The remaining structures, the protoplasts, are now bordered by the plasma membrane. Since the shaping force of the wall is missing, isolated plant protoplasts are usually perfectly spherical in shape as a result of non-directional osmotic forces. Run time 04:19
Elodea Cytoplasmic Streaming
About 10-15 minutes after preparing a wet mount of an elodea leaf, evaporation of some of the water makes it possible to see chloroplasts in motion inside of the cytoplasm. "Cytoplasmic streaming" is defined as the movement of the fluid substance (cytoplasm) within a plant or animal cell. This is the mechanism for the transport of nutrients. Run time 02:31.
This short, animated video is a biology group project where students were asked to make a commercial about an organelle in a plant cell. The chloroplast in this commercial is a restaurant called "Le Chloroplaste". The "chef" explains what ingredients he uses to make gluclose in the process of photosynthesis. Run time 01:04.
Plant Development: Cell Structure and Function
Professor George Wolfe discusses cell structure and function in this video from Thinkwell's online Biology series. This video uses lecture format and a whiteboard to aid in explanations. Run time 11:07.
3D Animation of a Heart Attack
This 3d medical animation illustrates the story of a heart attack from a blocked coronary artery due to th inflammation of blood vessels. Beginning with damage to the endothelial arterial wall, the animation shows how a white blood cell entering the wall of the artery changes into a macrophage, grabbing and digesting cholesterol. As the cell does its job, it transforms into a foam cell, which, unfortunately, becomes part of the plaque within the blood vessel wall. Ultimately, over a period of
Inside a Solar Cell
In this interactive activity adapted from NOVA Online, learn how a typical photovoltaic cell converts solar energy into electricity. Explore the components of a photovoltaic cell, including the silicon layers, metal backing, antireflective coating, and metal conductor strips. Using animations, investigate why the silicon layers are doped with phosphorous and boron, and how an electric field is used to generate electricity from sunlight. No audio.
Bill Coen Press Conference Siena Nov 20, 2010
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Free Electron Gas
free electron gas, Fermi surface, white dwarfs
In Detail Ontdek Europa : Info over Europa en de Europese Unie In Detail Ontdek Europa is een brochure voor wie wil weten hoe de Europese Unie werkt, het ontstaan van de lidstaten, wat doet Europa,... Volgende onderwerpen komen aan bod:
In Detail Ontdek Europa is een brochure voor wie wil weten hoe de Europese Unie werkt, het ontstaan van de lidstaten, wat doet Europa,...
Volgende onderwerpen komen aan bod:
Letter Activities "W" with Food
Introduces the letter W, the W sound, and food that starts with a W. (6:23)
Online Rights and the Law
How does the law stand in relation to web privacy? Do we have the same rights online as we do in life? The online revolution has moved rapidly but has the law managed to keep up with it and what has been the impact on our legal rights? These two films touch upon issues that have emerged as a result of a growing online community like the complications that arise when attempting to reconcile how various countries use different laws to police an individual’s omnipresent profile on the net. It als
The Patuxent Partnership Member Firm of the Year: Lockheed Martin
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Brian Kernighan: The Changing Face of Programming
The rapid evolution of languages, tools, environments, and expectations presents major challenges and opportunities for programmers and for software engineering education. This is true across all kinds of programming, but is especially so for Web systems, which are now routinely written in untyped scripting languages and include Ajax, mashups, toolkits, frameworks like Rails and Django, and a profusion of interfaces, all operating asynchronously on distributed systems. For the past 7 or 8 years