Week Three 20/1/12

Fluidos
There are four existing materials, although only three maintain the "fluid" status.

• They are: 
• Solid
• Liquid
• gas 
• plasma

The state of the three fluids (liquid, gas and plasma) are at either:

->Hydrostatic - still fluids

->Hydrodynamic - fluids in movement

Principios

There are three main principles that support the idea of Hydrodynamics (water in movement)

1. Pascal's principle - states that when ever there is an increase in pressure at any point in a confined fluid, there is an equal increase at every other point in the container.
2. Archimede's principle - states that a body immersed in a fluid is buoyed up by a force equal to the weight of the displaced fluid.
3. Torricelli's principle - states that the outflow velocity at the outlet is equal to the velocity of a particle flowing freely from the height.

<-Pascal

<-Archimede

<-Torricelli 

Pressure equations:

• P=F/A -> N/m(squared) which is equivalent to a Pa (pascal)
• 1atm=76cm - Hg = 1.013 x 10(to the fifth) Pa
• P(total) = P(i)+P(fluid)
• P=RO(meaning density) x gravity x height 

Density Equation -> RO=m/v ->kg/m(cubed)

• "v" meaning volume can either resemble m(cubed) or liters

Viscosity Equation -> viscosity=Pa x seconds

• "Pa" referring back to a pascal of pressure

http://www.ted.com/talks/charles_limb_building_the_musical_muscle.html

I found this medical seminar on hearing very interesting, relating the restoration of hearing towards music. In this speech the very true point of how our senses want to experience pleasant things, such as hearing good music, is important and necessary to most. The sense of hearing is crucial to leading a more filled life, therefore this practice has come the furthest regarding restoration than all the other senses have. The primary restoration is in the cochlea, the part of the ear that allows ones to hear. The sound of music to one depends on the condition of the cochlea. If damaged music could sound awful, and completely unenjoyable. This is because music is considered an abstract sound unlike a language, so the pitch gets more distorted, making the sound of music at times unbearable. As music is that pleasant 'getaway' for the sense of hearing professionals have found ways for cochlea replaced patients to train their ear in order to enjoy and maybe even learn to play music.