Saturday, May 17, 2008

25


so i was hungry yesterday when i got home and i noticed that we had cup noodles in the pantry. As i was heating my chicken flavored ramen in the microwave, i remembered how microwaves work. Microwave ovens send microwaves through the food, heating it with its kinetic energy. The high frequency waves are invisible to our eyes, but can be harmful with exposure.

Saturday, May 3, 2008

24


i was at waikiki yesterday and i wanted to jump off the wall to cool off. However, the tide was a little low and the reef looked menacingly close to the surface of the water. there were wide rolling waves , and i jumped into a crest of a wave to make sure i didn't hit rock. By landing in the crest of a wave, i decreased my falling time thereby decreasing my speed, and increased the amount of water between me and the rocks which meant i had more time to slow down.

Sunday, April 27, 2008

23


My little sister printed this piece of paper for one of her homework assignments. She's young and she thought it would be cool to print the assignment in different color texts (which it is). When i saw it come out of the printer i remembered what we talked about. The printer uses ink to 'color by subtraction' and make the different colors. It combines yellow, cyan, and magenta ink to form the black, uses the yellow ink as it is, combines yellow and magenta ink to form the red ink, and combines the yellow and cyan ink to form green. The black ink absorbs all light, the red ink absorbs everything but red light, the yellow absorbs blue light but reflects red and green light, and the green ink absorbs everything but green light.

Sunday, April 13, 2008

22


On saturday i played a soccer game at kapiolani park. During one play, i was dribbling down the field toward the goal. There were two defenders between me and the goal, but i wasn't scared. I promptly lost the ball and the other team launched a counter attack. Apparently, a teammate of mine was wide open across the field and he would have easily scored had i played him the ball. The reason i couldn't hear him calling for the ball was because of the jammin hawaiians concert that was going on at the shell. It was so loud in there it drowned out anything we said to each other across the field. The sound waves emitted by the concert drowned out our speaking because of its massive amplitude. The concert sounds did not, however, block our voices. This is not possible, as waves pass through each other unaffected. It was just too loud.

Sunday, April 6, 2008


I'm the brown guy. I went to the beach this weekend and there was a guy doing gainers into the water at china walls. He sprinted forward toward the edge of the wall, and jumped outward and forward while at the same time generating a backward torque to rotate his body backward, while moving forward into the water. It was pretty cool. He jumps outward and while hes in the air he pulls his knees to his chest to begin the backward rotation. Then he lands in the water and the water exerts a force on him to stop the downward motion. This force results in a change in momentum , constituting an impulse. Since it takes so much time for him to stop moving downward in the water, the force is proportionally small.

Sunday, March 16, 2008


I use a wallet with a money clip on the outside. The money clip uses two magnets to hold the folded dollah bills together. The two magnets both have a north and a south pole, and both magnets exert a field. Due to the magnetic fields, the two magnets are attracted to one another. The people who made the wallet had to make sure that the two magnets aligned so that opposite poles come in contact, otherwise the money clip would not work. If the two south poles were facing each other or the two north poles, the two magnets would repel each other and serve no purpose. Sometimes, if i lean against something metal, my wallet is attracted to it and pulls my pants out to stick to the metal. The metal has to be iron, nickel, or cobalt in order for my wallet to do this to my pants, and it is really quite annoying.

Sunday, March 9, 2008

This weekend i watched Without a Paddle on Comedy Central. Three men go on a treasure hunt adventure, searching for a lost parachuter's body with stolen money in the woods. Their search seems to be hopeless, as the men have ran all over the mountain being chased by a bear, marijuana farmers, and a corrupt sheriff. Suddenly, one of the men makes a realization. There is a huge iron ore deposit in the mountain, and this iron would throw off a compass. Because the iron is a magnetic metal, it makes sense that it would throw off a compass. However, will an iron ore deposit in the ground become magnetized? idk.