National High Magnetic Field Laboratory
Magnet Academy: Timeline of Electricity and Magnetism: 1840 1849
The legendary Faraday forges on with his prolific research and the telegraph reaches a milestone when a message is sent between Washington, DC, and Baltimore, MD.
National High Magnetic Field Laboratory
Magnet Academy: Timeline of Electricity and Magnetism: 1940 1959
Defense-related research leads to the computer, the world enters the atomic age and TV conquers America.
National High Magnetic Field Laboratory
Magnet Academy: Timeline of Electricity and Magnetism: 1930 1939
New tools such as special microscopes and the cyclotron take research to higher levels, while average citizens enjoy novel amenities such as the FM radio.
National High Magnetic Field Laboratory
Magnet Academy: Timeline of Electricity and Magnetism: 1910 1929
Scientists' understanding of the structure of the atom and of its component particles grows, the phone and radio become common, and the modern television is born.
National High Magnetic Field Laboratory
Magnet Academy: Timeline of Electricity and Magnetism: 1890 1899
Scientists discover and probe x-rays and radioactivity, while inventors compete to build the first radio.
![Hes Energy Net: Energy Use and Delivery: Lesson Plan 3.3: Electromagnets [Pdf] Lesson Plan](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Hes Energy Net: Energy Use and Delivery: Lesson Plan 3.3: Electromagnets [Pdf] Lesson Plan")
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Hes Energy Net: Energy Use and Delivery: Lesson Plan 3.3: Electromagnets [Pdf]
In this lesson plan, students learn how to identify and explain an electromagnet, describe the relationship between electricity and magnetism, and compare an electromagnet to a bar magnet.
National High Magnetic Field Laboratory
Magnet Academy: Magneto 1832
The magneto helped fire up the first generation of automobiles.
National High Magnetic Field Laboratory
Magnet Academy: Kettle 1891
Found in more homes than any other appliance, the kettle has steadily evolved from an ancient tool to an important modern convenience.
National High Magnetic Field Laboratory
Magnet Academy: Hydroelectric Power Station 1882
The first hydroelectric power plant, known as the Vulcan Street Plant, was powered by the Fox River in Appleton, Wisconsin.
National High Magnetic Field Laboratory
Magnet Academy: The Tesla Coil
What's behind the cool purple sparks? Neat science about resonance and transformers. Slideshow: [6:00]
National High Magnetic Field Laboratory
Magnet Academy: Torsion Balance
Experiment with the torsion balance and see what happens first by giving the rod a charge, and then by moving the charged rod closer to the outer metal sphere of the instrument. Observe what happens to the needle as the charge increases.
National High Magnetic Field Laboratory
Magnet Academy: Apple Ii Plus 1979
Long before the iPhone, the iPod or even the Mac, there was the Apple.
National High Magnetic Field Laboratory
Magnet Academy: Early Chinese Compass 400 Bc
The first compass was used not to point people in the right direction literally, but figuratively.
National High Magnetic Field Laboratory
Magnet Academy: Edison Battery 1903
Although it never quite measured up to expectations, the Edison battery paved the way for the modern alkaline battery.
National High Magnetic Field Laboratory
Magnet Academy: Fluorescent Lamp 1934
Compared to incandescent lamps, fluorescent lamps last longer, require less energy and produce less heat, advantages resulting from the different way in which they generate light.
National High Magnetic Field Laboratory
Magnet Academy: Electrostatic Generator 1706
Otto von Guericke's electrostatic machine evolved into increasingly improved instruments in the hands of later scientists. In the early 1700s, an Englishman named Francis Hauksbee designed his own electrostatic generator, a feat stemming...
National High Magnetic Field Laboratory
Magnet Academy: Electrophorus 1764
A very primitive capacitor, this early device allowed scientists to give discs of metal a specific charge.
National High Magnetic Field Laboratory
Magnet Academy: Geiger Counter 1908
Counting alpha particles was tedious and time-consuming work, until Hans Geiger came up with a device that did the job automatically.
National High Magnetic Field Laboratory
Magnet Academy: Leclanche Cell 1866
With only minor changes to its original 1866 design, the Leclanche cell evolved into modern alkaline batteries and the most popular household battery to date.
National High Magnetic Field Laboratory
Magnet Academy: Iconoscope 1923
American inventor Vladimir Zworykin, the "father of television," conceived two components key to that invention: the iconoscope and the kinescope.
National High Magnetic Field Laboratory
Magnet Academy: Plante Battery 1859
French physicist Gaston Plante invented the first rechargeable battery, leaving an enduring legacy in battery history. To see it, just pop the hood of your car.
National High Magnetic Field Laboratory
Magnet Academy: Pacemaker 1960
Many heads, hands and hearts contributed to the development of this lifesaving device.
National High Magnetic Field Laboratory
Magnet Academy: Oscilloscope 1897
From the auto shop to the doctor's office, the oscilloscope is an important diagnostic tool. A mechanic may use an oscilloscope to measure engine function, while a medical researcher uses it to monitor heart activity.
National High Magnetic Field Laboratory
Magnet Academy: Morse Telegraph 1844
The man most commonly associated with the telegraph, Samuel Morse, did not invent the communications tool. But he developed it, commercialized it and invented the famous code for it that bears his name.