Pressure guage is first to come to mind.
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The popular video-sharing website "YouTube" first came online back in February 2005. It was developed by 3 guys who at one time were employed by PayPal.
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Radio technology has come a long way since the days of tube radios. However, tube radio fans can purchase replacement 6L6 tubes online at thetubestore.
First Tube was created in 2000.
ask your teachers!! that's not even an answer! Come on!
on You Tube
On youth tube
Around 2007 i believe
An atomizer works by first squeezing the ball on the top. The change of pressure in the bottle allows the contents to come to the top of a tube. When the air in the ball is released, the scent at the top of the tube is sprayed.
If you mean the "magic ball" as in the touchable bubbles that you blow up from a tube? You buy the kit witch will come with a blowing tube with a yellow side and a red also it will come with a tube in the shape of toothpaste first squeeze some goo from the tube that is in the shape of tooth past and push on the tube then rap some glue around the yellow end of the tube then back sure there is a dot on top then blow slowly from the red end after that when you have it the size you want the balloon pinch the balloon were the tube is and pull off then make sure it is no hole's and then PLAY!!!