©; 2024 VideoMan | Contact / Contact: info@videoman.gr | Privacy Policy | Terms Of Use
Loading the player...
Speakers: Magnetism and sound
(11) | 30/10/2013 | Translate: The speakers are taking advantage of the interaction of magnetic fields to generate sound waves. This video explains and describes how you can construct a simple speaker.
The sound of a balloon popping: reverberation chamber vs anachoic chamber A man pops a balloon in a reverberation chamber, wherein the acoustic field is completely diffused. Then, do the same test in an anechoic chamber, where the walls absorb sound waves. The difference in sound is huge.- Ferrofluid screen on a speaker Dakd Jung made a Bluetooth speaker, which has a bowl with iron fluid (Ferrofluid). The iron fluid consisting of ferromagnetic particles, reacts to the magnetic field created by an electromagnet to the beat of music.
- The magnetic switch Obviously one can not deactivate the magnetic field of the natural magnet. But playing with more than one magnet and creating interaction with the fields, them we can get interesting results. As this "magnetic switch".
- The sound of the collision of two black holes The gravitational waves recorded by the collision of two black holes turned into sound waves, as can be heard in this video. On September 14, 2015, the LIGO Observatory detected gravitational waves from the merger of two black holes, with each having 30 times the mass of our sun. The incredibly strong collision lasted only for milliseconds. The first two reproductions, the frequencies of sound waves with frequencies precisely matched the gravitational waves. In the other two iterations has been converting sounds at higher frequencies that best match the range of human hearing. The video finishes playing the original frequencies again twice.
- Pyro Board: Flames that respond to sound The Pyro is a Board table, where LPG and sound combine to produce flames in the rhythm of the music. The sound waves that pass through it creates different pressures inside the, and so affect the height and color of the flame.
- Acoustic levitation A recent video by researchers in Japan shows sound waves to metewrizoyn light objects, as matches, small screws and transistor. Experiments conducted by the Yoichi Ochiai and Jun Rekimoto at University of Tokyo look like magic, However actually come from a strange natural phenomenon. When the speakers are aligned with accuracy, form two sets of sound waves which pose perfectly with one another, creating a phenomenon known as a "standing wave". At certain points along a stationary wave, they are known as nodes, There is no net power transfer. Because the acoustic pressure of the sound waves is sufficient to nullify the effect of gravity, light objects can float when placed in the nodes.
- Water and sound An experiment where the frequency of sound waves and water flow are synchronized with the framerate of a camcorder, creating this incredible optical illusion.
- You can listen to radio using plants; An AM radio signal transmission antenna in Ukraine produces sound through plants. This is why the transmission is done through troughs of voltage of power supply evaporates moisture to plants proportionally, creating sound waves.
- Sound waves Throwing rice on a loudspeaker that pulsates with alternating frequencies, We can see the formation of sound waves.
- Sound box for horror movies Someone created a sound box that allows creating sound effects for horror movies. It is improvised and constantly evolving according to the creator.
- The reaction of copper against strong magnets Ben from the NightHawkInLight channel, experiments with Lenz's law and Faraday's law of induction to create electricity and magnetic fields in copper. Copper is not magnetic, but creates resistance in the presence of a strong magnetic field, causing powerful magnets to slow down when they approach him.
- Kush Kash: A musical instrument from Ghana Cous Kash or Kasaka, is a very simple musical instrument from west Africa. It is a percussion instrument consisting of two small gourds (from the Oncoba spinosa tree) full of beans - essentially two small maracas connected by a string. One pumpkin is held in the hand and the other is quickly rotated from side to side around the hand, making a sound on impact.
- Who is honking; A young man placed a Bluetooth speaker in the body of his father's truck, and made it play horn sounds along the way. Without being able to understand why his other vehicles are constantly honking while driving properly, his father started to get annoyed.
- Magnetic field in an aluminum foundry In an aluminum smelter in Russia, workers show the strong magnetic field generated by about 2MW of current, which are needed for electrolysis.
- The sound effects in Transformers movies An audio technician shows us how some of the sound effects of the robot transformation in the Transformers movies were created.