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Tag: science

Bad science in sci-fi movies

Bad science in sci-fi movies

Movies
The adventures of Captain Kirk and the crew of the Starship Enterprise defined a new level of science fiction fandom in the late sixties. The image of Luke Skywalker blowing up the Death Star forever changed the impact and scope of blockbuster moviemaking. Audiences ate it all up without even batting an eye at the believability of the scientific concepts on display, but the science in such sci-fi favourites is often questionable at best. Sounds in Outer Space The dramatic screeching of TIE fighters swooping across the screen to the strains of John Williams’ Imperial March in The Empire Strikes Back is in an unforgettable part of science fiction history. So are the whooshing sounds of the Enterprise going to warp speed in the Star Trek movies. Now imagine the same images with no so...
How To Extract Water From an Aquifer

How To Extract Water From an Aquifer

General
Aquifers are essential to our survival. They store ground water and enable life to flourish in regions that would be otherwise virtually uninhabitable. Humans have become very good at exploiting natural resources such as aquifers, but this very fact makes them vulnerable. Our ever-increasing water demands mean that some aquifers are being depleted more rapidly than they can be replenished, which means the water supply is coming under threat. For exploitation of an aquifer to be sustainable it is necessary for its water content to be replenished at least as quickly as it is extracted. Water is normally drawn from aquifers using wells, although if an aquifer outcrops at the Earth’s surface then drilling a well may not be necessary as groundwater can seep from it naturally. Where this ...