A Blowing Bubble Activity that will Blow the Kids Away!Written by Anne-Marie Killer
I bet you haven't given this blowing bubble activity any thought as a child party activity?
I'm not talking about little kids blowing little bubbles from those little containers - no, I'm talking about blowing HUGE bubbles. I bet you didn't even know that it was possible? Yes, your bigger kids and their friends can have a lot of fun with this blowing bubble activity and what's more, it's inexpensive too... especially if you know how to make right bubble solution and tools.
I'll give you a few recipes to try out and also a couple of tool ideas. You can have lots of fun experimenting with mixtures and creating your own original bubble making tools.
There are so many things around you that can be used to make bubbles. Wire hangers bent into different shapes, empty milk containers, string, plastic bowls, or even your bare hands held in right position. Make a circle with your thumb and index finger or make an even bigger circle using both hands' thumbs and index fingers.
The really big bubbles need lots of solution which can get quite expensive. It's therefor a lot more economical to mix your own.
The Difference between EDTV and HDTVWritten by Kenny Hemphill
Confused by EDTV vs HDTV? We don't blame you. The number of acronyms floating about with regard to digital TV is frightening. What's even more worrying is that very often they are used by people who have little or no knowledge about what they mean. If person selling you doesn't know difference between EDTV vs HDTV, how are customers supposed to decide which TV or projector to go for?
In our guide below, we've tried to distill technical info into as few words as possible and make it as straightforward to understand as we can.
To properly explain EDTV vs HDTV, we need to step back a bit. Traditional TV has 525 lines of video which are interlaced. Interlacing just means that every frame of video is split into two fields and each field is shown alternately. Although there are 525 lines in signal, only 480 lines contain video, so it is sometimes referred to as 480i (480 lines interlaced). This is known as Standard Definition TV, or SDTV. While this has worked well enough for fifty years, as TV sets have got bigger and projectors more popular, quality deficiencies have become increasingly apparent.
The ultimate answer to improving quality of image displayed on your TV is HDTV, however, as a step on road to HDTV, industry came up with Enhanced Definition TV, or EDTV. This system contains same 480 lines as SDTV, but they are progressive scan. Hence EDTV is also known as 480p. Progressive scanning just means that instead of splitting signal into two fields and showing half lines at a time, all 480 lines of video are shown at once. This results in a noticeable improvement in quality of video.