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At this Fourth of July holiday season, I hope the rest of the people of the United States take time to reflect on the history of our great country and what our freedoms mean to us. Do not take them for granted.
Here is a video that someone sent me the other day. It was filmed in Africa. Gazelles can run very fast but I guess their eyesight isn't so good.
I received this video the other day which shows a bird on TV making wonderful Sound Effects. I like how he has to clear his throat before he begins his presentation.
I love to watch these Rube Goldberg mechanisms, as they appeal to my Engineering Gene. Take a look at this Honda Accord Commercial. I hope you like it as much as I do.
P.S. I have some others that I will try to find and post to my blog.
Most of us may remember launching those plastic rockets that you filled with water and then pumped air inside. When you released the rocket, the compressed air inside pushed out the water and the reaction launched the rocket in the opposite direction.
We have used 1 or 2 liter pop bottles to do the same thing. Using PVC pipe we construct a stand as shown in the photo. Fill the bottle 1/3 full of water and quickly turn it upside down on the launcher. Hook up a bicycle pump and pump air into the bottle through the PVC pipe structure. The bottle will release itself from the launcher when pressure overcomes the holding force on the mouth of the bottle. The air inside the bottle forces out the water and the reaction launches the bottle in the opposite direction. It is not uncommon to reach a height of 50 feet with a 2 liter bottle.
I found this short video on the Internet the other day. It shows a young kid being hooked up to what appears to be a system of about twenty 2 liter bottles hooked together on some type of common air/plumbing assembly. The assembly is pumped up as I have described and attached to the kid's back. Somehow, all of the bottles are released simultaneously and the kid is launched out over a body of water, where he is quickly rescued.
I have run through the numbers to see if it is possible to launch the kid into the air. By my first order calculations, it would take more than 50 bottles to lift even a skinny kid off the ground, let alone that far over the water. Therefore I believe this video is fake. But it sure looks impressive. Don't you agree?