Paper Circuit! Amazing science experiment English
LIKE/FAV for Paper Goodness! Can I borrow your pencil?
Here are the items you will need.
1. A number 2 pencil (Better if you get a 2B...
LIKE/FAV for Paper Goodness! Can I borrow your pencil?
Here are the items you will need.
1. A number 2 pencil (Better if you get a 2B pencil from the art store)
2. A thick piece of paper
3. A single LED
Graphite is a pretty terrible electric conductor but it works well enough to do some cool stuff with paper.
We can actually make a fully working circuit as well as a flashlight using the 3 items above.
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Iran successfully launches second satellite " RASAD" into...
Amir Mehdi Kazemi, Press TV,Tehran
Another achievement for Iran's aerospace industry; a new satellite project aimed at bringing Iranian...
Amir Mehdi Kazemi, Press TV,Tehran
Another achievement for Iran's aerospace industry; a new satellite project aimed at bringing Iranian scientists a step closer to a more advanced space technology.
According to Iran's space organization the Safir-e- Rasad Iran's second satellite carrier is responsible for placing the 15.3 kilogram Rasad satellite into orbit. Just minutes after the launch signals were sent down to earth via space cameras, indicating that the satellite had been placed successfully into its circuit on a two month mission.
The project has been the result of cooperations between the aerospace organization and Malek Ashtar University both affiliated to Iran's ministry of defense and Iran's space organization.
The Rasad is the country's first imaging satellite. Despite its small dimensions which puts it under the category of micro-satellites the device has all the features of big satellite.
It will orbit the earth at an altitude of 260 kilometers 15 times every 24 hours.
The satellite is equipped with solar panels and uses solar energy to work.
Iran launched its first home made satellite Omid in 2009. The telecommunication satellite put Iran's name in the list as the ninth country to develop satellite launch capability.
With Iran's space projects speeding up the sky no longer seems to be the limit for scientists in Iran. Tehran says that it plans to launch the country's first manned mission to space by 2019.
2m:30s
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Science Experiment - Fruit-Power Battery - All Languages
Voltaic batteries of all shapes and sizes are objects that convert chemical energy into electrical energy. You probably use batteries to power your...
Voltaic batteries of all shapes and sizes are objects that convert chemical energy into electrical energy. You probably use batteries to power your cell phone, iPod, or any number of wireless gadgets. But did you know that you can actually use chemical energy stored within a lemon to power a small LED light? It\'s true, and we\'ll show you exactly how in the Fruit-Power Battery experiment. How does it work? Batteries are comprised of two different metals suspended in an acidic solution. With the Fruit-Power Battery, the two metals are zinc and copper. The zinc is in the galvanization of the nail, and the penny is actually copper-plated zinc. The acid comes from the citric acid inside the lemon. The two metal components are electrodes, the parts of a battery where electrical current enters and leaves the battery. With a zinc and copper set-up, the current will flow out of the penny and into the nail. The electricity also passes through the acidic solution inside the lemon. Once the Fruit-Power Battery is connected to the LED, you create a complete circuit. As the electrical current passes through the LED, it lights the LED, and passes back through all of the lemons.
1m:8s
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[09 Dec 2013] US judges question necessity of genital searches of...
In the US prison at Guantanamo, despite various calls for a halt to humiliating and degrading treatment of inmates, such acts continue. In the...
In the US prison at Guantanamo, despite various calls for a halt to humiliating and degrading treatment of inmates, such acts continue. In the latest development, US appeals court judges are questioning the need for genital searches of prisoners before meeting their lawyers. At a hearing of a three-judge panel of the US Court of Appeals for the District of Columbia Circuit, Judge Thomas Griffith said that checking the prisoners\' private parts was both provocative and offensive. Griffith then cited the detainees\' right to have easy access to their lawyers as a legal obligation of the court. Some of the prisoners have decided not to meet their lawyers because genital searches were required beforehand. Meanwhile, another US appeals court is reviewing whether it is necessary to force-feed hunger-striking prisoners, an act which some people describe as torture.
3m:37s
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