Television was used for community communication it was made so people could not just hear the events that were happening but also can see what was happening and understand things better.It can also be used for entertainment.
Television can help with weather, by broadcasting it to people who aren't aware :P
Well, televisions are useful when you watch the Science Channel or the History Channel. It depends on what you're watching, but news are also useful.
tv light bulb
junk
Laptop sure is useful but not smart tv. only a good full hd tv will suffice. in laptop he can get unlimited of any informations he needed.
being on TV or in a film
j.l.baird
Radio is useful for the older generation, if somebody is unable to see/watch the television radio is the next best thing!
A rear projector tv is useful for a better quality of the image, a bigger group of people watching TV in a bigger room. Also is very interesting to create a cinema effect in your own house.
it turns ur brain to mush
Example: TV. Electricity- Heat, light, sound. Useful energy transfers would be electricity- light, sound because that's what your TV actually needs, but electricity- heat would be wasted energy or a non-useful energy transfer because your TV does not need to produce heat, unless of course you can't afford central heating, but then isn't heating more important than a TV???? Summary: Useful energy transfer: The purpose of the object is fufilled by this transfer. Non-useful energy transfer: The purpose of the object is not fufilled by this transfer, and in effect, this transfer is a "side effect" of the useful energy transfer. These transfers waste energy.
Television is a very useful device but depending on use everything has disadvantages.Misuses of television includes the access of children.
One can find short and useful news from the different media sources such as online, TV, newspaper, magazines, and even from the radio. BBC for example offers mostly 3 minute news which is quite useful.