A meteorite fragment that fell in 1572 in Chaco, Argentina, known as the Campo del Cielo Meteorite. “Continue reading” for more details and photos. Continue reading
Meteorite
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Category Archives: Oddities
Magnetism Projects To Do
A magnetic field viewer recording 3 different axes of a specific value of magnetic flux.
Magnetism projects – to do list
This is a wish list of magnetism projects in no particular order. Some small and interesting to me and others to try things I have not seen on the net before.
“Continue reading” to see my eclectic wish list of future projects.
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Lodestone
Lodestone – Nature’s Magnets
This specimen of Lodestone is only a couple of cm long. It is a magnetic rock called magnetite used as one of the earliest compasses. Here it is shown with some iron filings attracted to to it. This also shows the areas of greatest magnetisation.
“Continue Reading” to see mapping of fields, more lodestone projects, a compass and links…
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Singing magnets
Singing magnets
Singing magnets are magnets that make a peculiar sound when they crash together under magnetic attraction. They are ovoid magnets can be bought in novelty stores and eBay for less than $10. Also known as rattlesnake or buzz magnets. They might make an interesting amusement as a present for the geek in your life.
“Continue reading” for a video and slo-mo effect and how to throw them. Plus links…
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Magnetic Repulsion Demo
Magnetic repulsion demo. You can’t push them together. This is a popular demonstration of magnetic repulsion. You try to bring the North poles of these magnets together but physically can’t. You start feeling the invisible field at about 10 cm and it becomes stronger than you are at about 2 cm. It is a spooky feeling.
For more details with 5 photos and links:
Magnetohydrodynamics
Magnetohydrodynamics in a model boat
A model boat demonstrates magnetohydrodynamics. In one of its forms it gives electrical propulsion with no moving parts by applying an electric current to a fluid in a magnetic field generating thrust. This applies to any conductive fluid including water (preferably salt), liquid metal or plasma. Here I am demonstrating the principle with water.
“Continue reading” for further explanations and using powers up to 1 kW. 8 photos and links..
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Homopolar Motor
Homopolar motor made with 4 common household parts.
This homopolar motor has 4 components and takes seconds to make. Running here at 5800 RPM. It ran for 2:35 minutes once the power is off because the bearing is only a point with much of the weight taken off by gravity.
“Continue Reading” for further explanation. 2 Photos and links….
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