Jump to content
  • entries
    30
  • comments
    35
  • views
    4,604

Entries in this blog

Hovercraft

The hovercraft hovers by creating a cushion of air with enough pressure to the weight of the craft and the passenger.  The fan constantly blows air molecules into the cushion.  The cushion inflates, and there are a couple of holes in the cushion that allows some air molecules to escape so the cushion doesn't explode from the pressure.  The trick to get the craft to hover is to have the air molecules exert greater pressure or force than the weight of the craft.  The air pressure needed to lift th

jwdiehl88

jwdiehl88

Metamaterials

Could you create an invisibility cloak?  I mean if it was possible it would be insane.  But what if there exists a material that scientist created that allows it to bend light or an electromagnetic radiation of an object, giving the appearance that it isn’t there at all.  Light is electromagnetic radiation, made up of vibrations of electric and magnetic fields. Natural materials usually only affect the electric component.  However metamaterials can affect both the electric and magnetic field.  

jwdiehl88

jwdiehl88

Riding a Bike

Did you know that you transfer about ninety percent of your force upon a pedal of a bike into kinetic energy? Riding a bike is so simple but there is so much physics behind it. As you ride a bike there are multiple forces on you. There is a force of gravity downwards on you, so as you slow down, the force of gravity will push you and the bike down. There is also a drag force and frictional force acting on you and the bike. The drag force is the air resistance you feel when you go downhill. If yo

jwdiehl88

jwdiehl88

Ferris Wheel

A couple of summers ago, my family and I went to Hersey Park for vacation.  I'm afraid of heights but I love to go on roller coasters and I remember that there was a Ferris wheel that my sisters persuaded me to go on.  It was scary because you could see how high you were from the ground.  But it was also cool because you could see everything.  Anyways, a Ferris wheel can be related to physics because of its shape.  It is related to centripetal force and torque.  So basically, I could calculate t

jwdiehl88

jwdiehl88

Speed of Sound

The speed of any wave/the speed of sound depends upon the properties of the medium through which the wave is traveling.  But first if there is no medium for the wave or sound to go through, then there will be no sound.  For example, there is no medium in space so there is no waves/sounds travelling in space.  There are two factors that effect speed of sound.  One of them is the elastic properties of the medium/material.  Elastic properties of an object is how easily the object is able to bend or

jwdiehl88

jwdiehl88

×
×
  • Create New...