The Impact of Vibration on Human Health

AI Thread Summary
Vibration impacts human health through various physiological responses, particularly in the frequency range below 20 Hz, which can cause effects like nausea and sexual arousal. The discussion emphasizes the relevance of understanding how different bodily systems react to vibrations, suggesting a mix of physics and biology in the topic. The cochlea in the ear contains hair cells that vibrate at frequencies from 20 to 20,000 Hz, playing a crucial role in sound perception. Clarifying specific areas of confusion is essential for effective assistance. Overall, the interplay between vibration and human health encompasses both physical and biological aspects.
shojooon
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gooooood evening..

i have presentation about the effect of vibration on human and i did not find what i want and i did not understant the topices when i searched from google .. so I will be grateful if anyone could help me..
 
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Vibrations on human beings? Isn't that more physiology and biology than physics? Anyways listing the topics you didn't understand would be start. .because we may not understand them either!
 
i do not think that this topic related to biology because our this presentation physics lad class..
 
shojooon said:
i do not think that this topic related to biology because our this presentation physics lad class..

Ok fine so, what topics do you have difficulty with? Hey we must know, because otherwise it may not be possilbe to actually help you, who knows?
 
A number of bodily systems respond to vibrations in the <20 Hz range, producing effects such as nausea, urination, sexual arousal, etc. Is this what you're looking at?
 
In the ear's cochlea, there are tens of thousand of hairs which vibrate at different frequencies in the range of 20 - 20000Hz. When we hear a sound, in fact the sound is a combination of many frequencies (Fourier series) and the hairs vibrate resonantly according to the sound and finally the brain 'know' the signal.
 
I am going through this course on collision detection: https://siggraphcontact.github.io/ In this link is a PDF called course notes. Scrolling down to section 1.3, called constraints. In this section it is said that we can write bilateral constraints as ##\phi(\mathbf{x}) = 0## and unilateral constraints as ##\phi(\mathbf{x}) \ge 0##. I understand that, but then it says that these constraints call also be written as: $$\mathbf{J} \mathbf{u} = 0, \mathbf{J} \mathbf{u} \ge 0,$$ where...
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