29 results found for electricity

Succulent, cretaceous, technology, parasitical, electricity . . . Scientific investigation in the seventeenth century generated new ideas, and scientists needed new words to express them. Experimentalists, observers, collectors, and technicians all c....

Using solar cells to convert sunlight to electricity is an attractive way to reduce carbon emissions, but solar cells are still too expensive to be installed on the scale required. The next generation of solar cells aim to solve this problem using st....

This short video shows one of the demonstrations for the Physics SEPNet exhibition - "Who will keep the lights on?" which travelled around the southern UK from February 2009.  We describe and explain the electrical generator demonstration which Jona....

The controlled ways that electricity and magnetism can stimulate the body are demonstrated and how the resulting responses can aid diagnosis discussed.

Fine tuning the frequencies of light gave John Hall a Nobel Prize, and helped transform the fields of precision measurement and information transmission. Iris Choi and Andrei Ghicov are young scientists excited by the ways physics can change our worl....

An examination of the usefulness of fuel cells

A short video explaining how transistors work.  At the heart of our high-tech society with radios, mobile phones, computers and space exploration are tiny electronic components called transistors.  They have revolutionised electronics and in the pr....

The concept of bioelectricity emerged in the late 18th century, based on the experiments of Galvani and Volta. Sixty years ago, Hodgkin and Huxley showed that the nerve impulse is a result of permeability changes of the nerve membrane. This raised th....

This presentation reviews how magnets work and their uses in the world today. It also explains how magnets and electricity are related and what future inventions could come from using magnets.

A short clip showing the experimental measurement of the speed of electrical pulses in a cable - a large fraction of the speed of light.

Jonathan shows us with a cheap and simple homemade demonstration how your mobile telephone generates radio waves in order for you to use it to communicate.  As you will see you can use this method to explore many aspects of your mobile phone!