December 2, 2013

Bits

Advent Computing: Bits

If you watched yesterday’s video, you’ll have spotted the symbols that were being written to that “infinitely long” tape were “1” and “0”. There’s a reason binary – counting with only ones and zeros – is used so extensively in computing, and it’s essentially that it’s much...

Advent Biology: One bat, two bats, three bats, four…

So yesterday I started with bat transect surveys. While relatively quick and able to be carried out with minimum experience, in most environments and with fairly basic kit-though you can of course use more exciting and expensive equipment, like the EM3 which I’ll take a...

Advent Oil & Gas: Fossil fuels – what’s in a name?

It’s probably not escaped your notice that this series is about ‘oil and gas’, but you’ll also have heard a lot about ‘fossil fuels’ – they’re even in the title of this article!  What’s the difference?  The answer is somewhat complicated: fossil fuels are often oil...

Filter paper

Advent Chemistry: Filtration

You all know what a filter is. It’s that thing you make coffee with. It’s a way of seperating solid particles from liquids. A sieve is a filter, if not a very fine one. A teabag is a filter with leaves inside. It is one...