Coincidentally, i went to new york again. Just a coincidence because i just used a new york picture for my last journal. Anyways at battery park at the very bottom edge of manhattan, my cousin showed me this square thing that she had just discovered recently. When you step on a square it plays a note like a bell or a xylophone. As i jumped from square to square long the outside edge, the tone of the notes got higher and higher meaning the frequencies were increasing. I must have been the driving frequency, i think, every time i stepped on a square creating a forced vibration. the note never lasted very long because i was stepping on the metal square which was the sound board. Every time i pounced on a square i created a vibration but was absorbed by my leg so the sound quickly died out. What also could have made the note audible was a resonator underneath the metal plates like in a xylophone so the note played is louder. It was fun to jump on!
This is at the easter sunday new hope church service last week on easter sunday. When we were outside i noticed smoke was billowing out of the entranced doors. When i realized no one was running or screaming i walked in and realized there was a smoke machine. I was looking at the professional lights set up in the arena and realized why or maybe why there was a smoke machine. You could see the spotlights ray of light because of the particles from the smoke. Usually when you shine a flashlight on something or someone, you can see the end of the light, but you cannot see the beam of light unless it is a really bright light. Also when you look at the light projecting a movie at a theater, you can see the beam of light because of the dust particles in the theater. As the light hit the smoke particles the light reflected off of them allowing our eyes to see the path of the lights in the arena. I guess they created this effect so they could put on some kind of a light show to make the service more of a concert so it would be exciting and interesting instead of a boring chapel service. I don't know if this is physics, but i thought it was cool.
