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A handful of these scales worldwide this one is in the united states at the national institute of standards and technology. the high precision scale is based on the principle of electromagnetic force compensation this is how it works the gravitational force of a test mass is balanced with an electromagnetic force the magnetic field is provided by a permanent magnet a coil of wire is immersed in that field. it's like a coil in a loudspeaker and the coil is in a permanent magnetic field an electrical current is run through it to generate a force that force is used to balance the downward force o...

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They were unharmed. the fact that they were holding hands, their doctor says, probably saved them abuse it diffused the electrical current. a woman in washington state likes to help chipmunks. she builds miniature sets barbecues, classrooms doctors' offices and waits for the chipmunks to come by. she lures them with seeds. once they take the bait sheerks takes the photos. she calls the project friend chips. how cute. straight ahead, scrambled politics and comedian oliver on election day babies. introducing nutrient-dense purina one true instinct with real salmon and tuna and 30% protein. s...

Dr. seagull is here. thank you. >> steve: why is the government forcing us to use the bulbs. they use less important. >> curly things. you can stick them in any socket and one-quarter of the amount of energy and green what is not like to like. the electrical current goes over mercurie. that is dangerous. second thing is, people have had eye strain and depression because it is not much light. hey, i love your cereal there --

politics in washington could push america over a fiscal cliff and quite possibly into a recession if congress doesn't act. economists now say that the so-called fiscal cliff has now overtaken europe as the biggest threat to the u.s. economy. in other words, our homegrown storm has a bigger chance of causing a hurricane here than the actual hurricane that's blowing our way from europe. now i've been bee rat berating on this show to head off a series of tax increases and spending cuts mandated to take effect on january 1st. congress couldn't come up with a better deal to raise the nati...