We take radio and television signals for granted now. But if you really think about it radio waves really are a strange phenominon … invisibly beaming sound from one point to another through and around solid objects !
We are Stardust … the chemical elements that make up our bodies, originated, with one exception, in the turbulent body of a star
Why do so many things seem to go wrong ? Sometimes you suspect that the universe is out to get you! We need to look at some scientific theories surround something called Entropy or the “The laws of thermodynamics”
Ground Source heat pumps promise to supply most if not all the heating required for any new house without drawing ANY energy from the Electricity Grid! What are they? Ground source heat pumps use solar energy naturally stored in soil, bedrock and groundwater as a heat source. They do require electricity to operate, but efficiently produce up to five times as much heat energy for every unit of electricity they use. How does it work?A...
The most accurate time piece today is an Atomic Clock. But how does it work & what’s the theory behind it ?
Microwave ovens are part of everyday life. But how to they work?
Why is it that we don’t fall through the floor? What’s stopping us ? A stupid question, surely ? … not really when you consider what an atom is made up of.
Solar cells, or photovoltaic cells, convert energy from sunlight into electricity… but how? What principles lie behind this technology?
How many of us have a foot a foot long ?
What are the origins of some of the measurements we use today.