Physics

Photo

Mon, 21 May 2012 04:11:18 -0400

Movie projector. This was my attempt at taking a picture of the...

Mon, 21 May 2012 03:46:00 -0400

Movie projector. This was my attempt at taking a picture of the movie projector at Ward Theaters. The projector is kept behind a glass. It then projects the image onto the large screen. The distance from the projector to the screen must be exactly at the correct focal length or the image will be blurry. The projector produces a real image, which is why you need the glass in front of the projector. This glass is a converging lens, that flips the image again, so it it is right side up.

Vuvuzella!!!

Wed, 25 Apr 2012 02:12:31 -0400

Vuvuzella!!!

VUVU

Wed, 25 Apr 2012 02:12:00 -0400

This year I was very busy during the fair. However not busy with work, but busy with buying Vuvuzellas!. I somehow got three vuvuzellas at the fair this year. While most of the people play one long and somewhat annoying note on the vuvu, I learned how to create different frequencies and notes, by changing the length of the vuvu. As you shorten the vuvu the pitch goes up, and as you extend the vuvu the pitch drops. This change in frequency and pitch allow you to create different notes and simple songs.

Tiny Wings

Mon, 09 Apr 2012 12:48:30 -0400

Tiny wings is a very addicting game. The object is to assist ur tiny bird, with “tiny wings”, in soaring over hill and dale. The to obtain a high score you must fly from island to island, wit each island increasing in difficulty. The first island has low amplitude waves, with even wavelengths making it easy to judge the timing for descent. If you timing is perfect and ur bird gracefully caresses the downward slope of the wave you get bonus points and a nice extra boost. As you move from island to island the amplitude and frequency of the waves increase making it harder to get “perfect jumps”.

Tiny wings!!!!!

Mon, 09 Apr 2012 12:37:45 -0400

Tiny wings!!!!!

Transformer!

Sat, 17 Mar 2012 01:30:32 -0400

Transformer!

Transformer!!!!!!!

Fri, 16 Mar 2012 15:24:26 -0400

I have always wondered how my home in mililani gets it electricity. There are no tall electric poles, and no loud buzzing sounds. But after physics and a long walk with my dog kea I found the answer. A transformer!!! Hidding in the bushes. This transformer takes te high voltage and decrease it into bite size portions that can be used in homes

That's Amazing Current!!!

Mon, 27 Feb 2012 14:09:24 -0500

The fluorescent lights have a gas discharge that uses electricity to excite mercury vapor. They can produce electrical power into visible light more efficiently than incandescent light bulbs. There is amazing physics at work every time you turn on a light.

Wow!! Look at those beautiful fluorescent lights!!

Mon, 27 Feb 2012 14:05:26 -0500

Wow!! Look at those beautiful fluorescent lights!!

HAPPY PHYSICS!!

Sun, 29 Jan 2012 20:04:23 -0500

The other week it was my dad’s birthday, and we wanted to hang birthday balloons in the house for decoration, but we had no tape!! So we had to run to the store and buy some tape, just to hang the balloons. But now that I have learned good physics and understand the concept of static electricity and charge, I will never have to run to the store for tape again. All i have to do is rub the balloon on my head, giving it a charge, and touch it to the wall. The balloon will be attracted to the wall and stay suspended. Also i will never have to worry about the words I wrote on the balloon not showing. If i write on the balloon and apply a charge to the opposite side, the words on the balloon will always be facing out. This is because even if you try to flip the balloon over it will flip back to the charged side. After the party is done all you have to do is grab the balloon, grounding it, and then it wont stick to the wall anymore. Thanks physics for saving me lots of time and money!

Birthday balloon suspended by physics!!!

Sun, 29 Jan 2012 19:51:34 -0500

Birthday balloon suspended by physics!!!

Video

Thu, 12 Jan 2012 18:50:06 -0500

Torque

Wed, 11 Jan 2012 11:57:52 -0500

Whenever I am doing home repairs, or building something in 3D physics is all around me. Every screw I tighten, or nail or pound can be explained through physics. Whenever you pound a nail you can feel the different amounts of force created by holding the handle far away or close to the head of the hammer. This power couldnt be explained before, until now. This force is torque. Torque is found by multiplying the lever arm squared times the mass of the object. Therefore when you hold the hammer farther down the handle away from the head you create more torque and more force.

Mililani freeway on ramp. I never understood how speed limits...

Mon, 12 Dec 2011 02:15:00 -0500

Mililani freeway on ramp.

I never understood how speed limits were chosen until Physics showed me the light. This freeway on ramp near my house has a circular path, and a speed limit of 25 miles per hour. If you look closely you will also see that the road is banked at an angle that prevents cars from sliding and losing control.

Engineers can determine the appropriate speed limit by using centripetal acceleration and force. Centripetal force is equal to mass times the velocity squared all over the radius. By using physics engineers can make the roads much safer. Engineers not only determine the speed limit, but also make the road with a slight angle. This angle allows the road to push against the car creating more friction and more control for the car.

Air Hockey!! The energy from the puck was completely transferred...

Sun, 27 Nov 2011 22:44:29 -0500

Air Hockey!! The energy from the puck was completely transferred into the stack of pucks launching the bottom puck forward.

This is the boys and girls varsity bowling teams. Bowling is...

Mon, 07 Nov 2011 23:59:29 -0500

This is the boys and girls varsity bowling teams.

Bowling is packed with physics. The bowling lane is 60 feet long and about 42 inches wide. Then the lane is covered in a layer of oil to reduce its friction. My ball is fourteen pounds and has a diameter of about 8.5 inches. I release the ball 60 feet away from the first pin, at an average initial velocity of 13 miles per hour, it then converts its potential energy into kinetic energy as it charges towards the pins. This total kinetic energy is relatively unchanged, due to the oil and low kinetic friction.

Is this actually possible? The answer is no. This trick is...

Wed, 05 Oct 2011 02:48:00 -0400

Is this actually possible?

The answer is no. This trick is impossible. The forces that hold the water up, are too weak to push against gravity.

Some people say the spinning motion would allow the water to spin and retain its cup like shape. However when the water is spun it will have a centripetal force. This force makes the water want to expand outwards as it spins. An example of centripetal force is in ceramics. The clay on the wheel is constantly spinning in a counter clockwise motion, this gives the clay centripetal force, which is why if left alone your pot will continue to spin until it opens up and flies in all directions.

For this trick to work the force exerted from the water would have to push more than the gravity and mass that pushes it down. Also the water would have to keep from changing shape.

This was my attempt at a rainbow.

Sun, 11 Sep 2011 20:49:00 -0400

This was my attempt at a rainbow.

Sunday Morning Practice

Sun, 11 Sep 2011 20:47:00 -0400

With basketball season right around the corner it is important to practice. I shoot around for hours trying to perfect my free throws. However now that I have physics, all I need to do is apply the right speed, velocity, and trajectory, and the ball will fall right through the hoop every time. Once the ball leaves my hand it becomes a projectile flying the the air. SWISH

The ball travels with forward and vertical motion. If it the basket didn’t interfere with the ball’s path, it would rise then fall for equal amounts of time. With a constant acceleration of -9.8 meters per second squared. With Physics I will never miss a free throw again. Thanks physics!