3.4 Penetration depth The characteristic length, λ, associated with the decay of the magnetic field at the surface of a superconductor is known as the penetration depth, and it depends on the number density ns of superconducting electrons. We can estimate a value for λ by assuming that all of the free electrons are superconducting. If we set ns = 1029 m−3, a typical free electron density in a metal, then we find that
Subtracting Decimals - Math Help
Students learn to subtract decimals by first lining up the decimal points of each number. For fourth-graders and older students.
Digits and Place Value (Part 2)
This video indicates it is for Pre-Algebra, however this would be good for anyone who is reviewing or learning place value. In this video they talk about the expanded form of the number and how to read and write the number. They explain how to break down the number into expanded form, then they write it in expanded form. They do a few examples to help you understand. Then they write the number in expanded form and you have write the number in numerical form. Video is good quality and good
Taxing dirty energy
Only 10-15 per cent of the population is motivated strongly to go green if it's not in their own economic best interests. Dr Chris Hope explains that business is key to creating a green economy. Steps are required to ensure that businesses, looking for value-for-money in their energy supply and use, end up with a clean and green product. This can be done by making sure that anything that is dirty has a tax on it to recognise the pollution, the damage and impact caused by that dirty energy. If th
LIFE ON EARTH 1930
"The earth has not always been as we know it today; for countless ages it spun in space, hot and lifeless." This video is a silent news reel with details of science education in the 1930s. The video covers many areas of science, from microbiology to geology. The information is set to music and includes written explanations after many of the video clips. Run time 12:56.
John Adams - A Tribute
This is a tribute to the 2nd President of the United States - John Adams. The Music features the main theme from the 2008 HBO Miniseries - "John Adams". (02:11)
Roundtable on the Semicentennial of Rothbard’s 'Man, Economy, and State' Ser vs. Estar (Rap Music Video) OPSE 301: Introduction to Optical Science and Engineering How to Make Tortilla Chips From Scratch Training a Border Collie Science Fair Project (Hot Ice) Polar Bear Moving Over Thin Ice and Swimming Between Ice Floes The Influenza Virus Simple Subtraction From 4 Song "Elmo Has 4 Ducks" - Sesame Street Lugosi teaches math - Positive series2 How to Set Up a Web Camera Discovering Hidden Habitats: Monterey Bay Aquarium & NOAA Season 3 – Lesson 26 – Coffee Break Spanish This week’s topic is low-cost airlines and the advantages and disadvantages of low-cost travel. Mark and Alba discuss their experiences of flying with low-cost airlines (and indeed with other airlines!) and José introduces two phrases which you can use when you manage to find a real bargain! Language points covered include the use of quedarse, fijarse and no sólo … sino también. Premium members will find a bonus item in this week’s feed The Bellhop Counts to 10
Recorded 10 March 2012 at the Ludwig von Mises Institute in Auburn, Alabama. Featuring Peter Klein, Joseph Salerno, David Gordon, Shawn Ritenour, Guido Hulsmann, and Jeffrey Herbener. Includes a Question and Answer period. [1:28:44]
This student-made music video raps about the differences between Ser and Estar in Spanish. (02:32)
The purpose of this course is to provide a survey introduction to optics principles and their elementary applications. It is directed to junior level students in engineering and applied physics. This course has both lecture and laboratory components. The prerequisites for the course are the sophomore level core-calculus and core-physics courses required of all engineering and science majors at NJIT.
Make some homemade tortilla chips with directions from a
professional chef. The chef gives instructions on how to cut either white corn or yellow corn tortillas into large triangles, tossing them in a bit of oil, spreading them out evenly on a cookie sheet and baking them at 400 degrees until golden and crispy.
With just a whistle or a whisper, a trainer can set a well-trained
Border Collie into action. In a remarkable collaboration, it's as though
the dog is an extension of the human. See how one trainer was able to
make this happen.
This is a brief video of a school science fair project that won first place. Sodium Acetate was used in the project to create "hot ice", a liquid substance that instantly turns solid when touched. The video is set to music with brief descriptions written on the screen. No narration or explanation provided. Explanation: The reaction is exothermic and is often found in hand warmers. Run time 03:14.
This short video gives excellent real life footage of a large polar bear in its natural habitat walking and moving over thin ice and swimming between and under large ice chunks. Students will get a close up view of the polar bear swimming under water. This is a great resource to help build background knowledge and to help make real world connections between nature and the classroom. (Less Than 2 Minutes)
3-D animation shows how the influenza virus invades the body, takes over cells, and spreads the infection. The infected cells burst and more cells become infected. Â Explains how the specific cells of the immune system work to attack the flu virus. 2:07 min.
In this video snippet from "Sesame Street", Elmo sings about his 4 ducks. During each verse of the song, one duck at a time leaves, allowing the viewer to tell how many ducks are left. This would be a great song for introducing subtraction to very young children. (2:04)
Béla Lugosi teaches advanced mathematical concepts in this video. This video shows a variety of tests to prove positive series. He begins with what is called a comparison test and formulates proofs. Lugosi's hidden love for mathematics is illuminated by his animated teaching style. This video is geared to older, advanced mathematics learners.
In order to set up a Web camera, a person will need a camera, a USB port and the driver disc that comes with the camera. Find out why some drivers must be installed before plugging in a Web cam.
This video was produced by NOAA's Ocean Media Center for the National Marine Sanctuary Program. It shows deep ocean habitat and marine life found in the Monterey Bay National Marine Sanctuary, which is a Federally protected marine area offshore of California's (U.S.) central coast. (6:04)
Coming up in this lesson:
Ten tiny terriers must be walked by the bellhop in this classic Sesame Street cartoon series. He has a hard time with the 10 terrible terriers.Â
