Magnetic Levitation and Cymatics #magnettricks #cymatics #levitation
The water filled container with magnetic levitators are positioned on speaker cones. The speaker is connected to an online tone generator which allows the manipulation of sound wave frequency and amplitude. The triangle shaped piece of pyrolytic graphite starts to spin with the right amplitude of certain frequencies. The rotation effect was strongest and 25 Hz
The magnetic array isn't moving just up and down, there is also slight whisking motion that enables the spin due to constructive interference.
Cymatics is a word that refers to the study of visible sound and vibration. It is an interdisciplinary field that investigates the relationship between sound waves and matter, and its effects on our environment. There are a number of synonyms for the word cymatics. Some of these include acoustic physics, sound resonance, sound vibration, wave mechanics, and sound analysis. These terms all encompass the study of sound waves and their effects on the physical world. From music to science, cymatics has a broad range of applications, and understanding the science behind it is essential for a variety of fields. ... https://www.youtube.com/watch?v=8o_i5UxLaww
This catapult shot a 0,5 gram projectile 16 meters. Making abstract art by throwing paint with a magnetic catapult. This seems to be the most efficient catapult design I have made so far. The magnetic trebuchet shot max 14,5 m range without the sling attachment and it was a far more complicated build with more magnets. This is a pretty straight forward build. The slow motions were 120 fps / 640 x 480 px
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https://www.youtube.com/watch?v=GOFnIuHLcR4
Curie pendulum is a simple heat engine. In physics and materials science, the Curie temperature, or Curie point, is the temperature above which certain materials lose temporarily their permanent magnetic properties, those ferromagnetic properties are regained again after the material cools down below the Curie point.
1 Euro coin is made of two alloys: the inner part of three layers: cupronickel, nickel, cupronickel, the outer part is made of nickel brass which doesn't have ferromagnetic properties.
The curie point of nickel is relatively low: 355 °C (671 °F)
Curie temperature is named after Pierre Curie, who showed that magnetism was lost at a critical temperature. Pierre Curie (15 May 1859 – 19 April 1906) was a French physicist, a pioneer in crystallography, magnetism, piezoelectricity and radioactivity. In 1903, he received the Nobel Prize in Physics with his wife, Marie Skłodowska-Curie for their work on radioactivity.
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https://www.youtube.com/watch?v=h-FP9TmDAk0
Rubbing wool against a balloon creates an electrostatic charge that can be utilized in coordination with magnetic suspension to levitate a tiny N52 disk magnet.
Bouncing a ball bearing doesn't require a magnet below the container, but the magnetic field helps to keep the steel sphere bouncing in one place and also makes the sound louder
Goliath magnet: https://sumag.net/goliath-x03
Ring magnet: https://sumag.net/r-60-06-30-n-x03
Thanks to supermagnete for sending these magnets to me free
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https://www.youtube.com/watch?v=YddHDpXVe2A
12mm N48 cube: https://sumag.net/w-12-n-x02
Ø2,5 x 1 mm N52 disk: https://sumag.net/s-2_5-01-n52n-x01
5 x 5 x 1,2 mm N50 block: https://sumag.net/q-cdm50-g-x01
Many thanks to supermagnete for sponsoring me
Multi diamagnetic suspension levitation in horizontal and vertical axis. The small magnets are both attracted by the magnet above and repelled by each others magnetic fields. The pyrolytic graphite tile is 80 x 80 x 12,7mm.
? Marianas - Quincas Moreira
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https://www.youtube.com/watch?v=hcggjrJbHmk
Diamagnetic suspension levitation in horizontal axis. The small magnets are both attracted by the large ferrite rings and repelled by each others magnetic fields. The pyrolytic graphite tile is 80 x 80 x 12,7mm.
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https://www.youtube.com/watch?v=yV2SGcEajfo
Building a magnetic trebuchet / catapult is a challenging, educational and a fun project.
This prototype is a straight forward build. Took me an hour or so to make.
Base is a 24 cm x 9 cm x 1,2 cm wooden board
throwing arm lenght 25 cm + one popsicle stick at the end with a matchbox card board added as a cup for the projectile. 1:3,75 ratio in throwing arm gives the most bang for your buck (the pivot being the divider)
Threaded rod is at height of 10 cm from the base, I used popsicle sticks to carry the axle. one stick is 147 mm long and 17 mm wide and 1,5 mm thick. (three in each beam for added strength)
There is magnets on the throwing arm and magnets in the base, attracting each other.
Neodymium magnets are brittle, so I used a standard plastic bottle cap as a cushion between the attracting magnets. I thought I would destroy a lot of magnets doing this project, but so far I haven't broken any. about 2mm cushion is adequate
I recommend countersunk ring magnets, they are good because when a screw keeps them together reloading becomes a whole lot easier.
The trigger system is a stick through couple of eye bolts holding the throwing arm back.
Step 2: Larger Scale + Repelling Magnet
So, if you are serious about this project, you definitely want also use repelling magnets on the top for a lot of more punch
Throwing arm measurements, total length 38 cm pivot point is at 8 cm / 30 cm
4 mm diameter threaded rod is located at height of 9 cm from the base
take into consideration:
The repelling magnets at the top, don't want to come together, so any sideways movement of the throwing arm becomes a problem. To avoid the sideways movement The structure needs to be bulky and where the repelling magnets meet, the crossbeams are located close to the magnets so that they don't allow the sideways movement.
The magnets I used were:
2 pieces of grade N35, 60mm x 18 mm, 100 kg pull force ring magnets NdFeb
2 pieces of grade N52, 35mm x 10mm, 57 kg pull force ring magnets NdFeb 20 pieces of grade N42, 20mm x 3 mm, 17,7 kg pull force disc magnets, Ndfeb
Releasing trigger a wooden stick that goes through the thwoing arm and a block of wood that has a slot for it.
Step 3: The Sling Attachment
There's two strings tied to a piece of leather. The other end of the string is tied to the end of the throwing arm and the other string has a nut tied to it. The nut goes into a stick that is in a slight angle in respect of the throwing arm. The angle of that stick defines the releasing point of the sling. more angle means later point of release.
The lenght of the sling should be same as the lenght from the end of the throwing arm to the pivot point in other words if the throwing arm is in 1:3,75 ratio sling should be that 3,75 too.
The sling requires more than 90 de
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https://www.youtube.com/watch?v=96_EwlV3mVE
8mm steel ball bouncing on a stretched balloon. You can do this without the big magnet. Magnet just makes the sound a little louder and more uniform as the ball bounces mainly in on spot. Without the magnet the surface needs to be leveled quite accurately.
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https://www.youtube.com/watch?v=2YicMGtvAJk
#diamagneticlevitation #magneticlevitation #pyrolyticgraphite
Two diamagnetically levitated magnetic arrays.
Thanks to supermagnete for sending these magnets for free:
https://sumag.net/q-40-10-05-n-x02
http://sumag.net/w-05-n50-g-i01
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https://www.youtube.com/watch?v=qXdqY3eTARU