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Cutting bread with an ultrasonic knife
(32) | 05/04/2016 | Translate: Ultrasonic knife cutting much easier using vibrations produced by high frequency sounds.
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Wasps on the defensive Wasps go into defensive mode and prepare to respond to warning signals produced by sounds and vibrations. These signals do not only serve as warnings, but also as stimuli that can make them particularly aggressive.- Chocolate items Various items such as keys, a piece of bread, a knife, screws and nuts or even a skewer, which really look, but they are all made of chocolate.
- A girl hears sounds for the first time A girl with hearing problems, installs a state-of-the-art handset that allows it to listen to frequencies it previously could not. So he discovers many new sounds.
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- The hot chocolate effect The hot chocolate effect, is a phenomenon that is reproduced by stirring a hot liquid and adding soluble powder. Tap the edge of the cup repeatedly one by one the spoon, we notice that the sound produced has an increasingly louder tone. This effect is explained by fluctuations in the speed of sound in the liquid, due to the presence of gas bubbles. The wavelength of this sound that is heard, determined by the size of the cup, and the frequency of sound depends on its velocity in the liquid. The presence of air bubbles in the liquid significantly reduces this speed. So the sound sounds more bass (lower frequency) with bubbles, and thinner (higher frequency)when there are no bubbles.
- The most fun way to cut cheese The Jasper Russell cuts a piece of cheese with a knife, imitating the sound of a chainsaw.
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- The plant can not stand the shouts A man cries near the leaves of a mimosa (Mimosa pudica) and these close immediately and subside. The leaves of mimosa are not sensitive to sound, but fold if you accept several other stimuli, such as touch or vibrations.
- An alligator in the sewer As Louis Camacho went to get the mail from his home in Florida, She felt a strong vibration beneath his feet. Initially, believed that an earthquake, but as it descended to street level, heard a loud sound coming from inside the sewer. But froze when he discovered a menacing alligator hiding in the sewers.
- Yaybahar: An unlikely musical instrument The Yaybahar is an original, completely acoustic musical instrument designed by Gorkem Sen. The vibrations from the strings of springs transmitted on drums. These vibrations are converted into sound by the membranes that reverberate back and forth on springs, and this has resulted in a unique audio experience with a hypnotic sound surround. Here we hear the organ in real time, no additional effects or audio editing.
- The optical microphone Perhaps you should be more careful with your conversations in the future. If you are near a window in excellent sound insulation, someone might hear you. A team of researchers from Adobe, the Microsoft and MIT, they have developed an algorithm that can capture sound with a camera, simply detecting tiny vibration of an object in the video. The technique exploits the sequential shutter in modern digital cameras (where the sensor reads the Pixels per one line at a time) to detect the movements associated with the sound and is almost invisible to the naked eye. A camera frame rates high enough to record conversations from a bag of crisps, and music from the leaves of a plant.
- I'm: Noise cancellation device for your window The Sono sounds too good to be true in the realm of modern technology, and is not a product that you can buy right now. It is an idea created by the Austrian industrial designer Rudolf Stefanich and works by cancelling the vibrations caused by the external ambient noise, converting a window into noise-cancelling headphones. During testing of the prototype, the Sono successfully reduced noise by 12 decibels - a very good result for sounds in the 30-80 decibel range, but certainly not completely cancels the sound of traffic and loud noises.
- Visualization of acoustic frequencies An interesting experiment with the help of a metal plate, little sand and a speaker. The acoustic frequencies vibrate the metal plate in such a way as to create sites that no vibration. The sand falls in these regions, creating beautiful geometric shapes. As the frequency gets bigger, the shapes are more complex.
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- I don't eat crap A stray dog in China is not at all happy when someone gives him a Baozi bun to eat.
mufa...I didn't hear anything :D
Really, like bread are cut.
try with your own first to do self k meta ELA to tell us terastie