Doodle Science - September 2014

Circulated to schools, organisations and individuals - covering primary science and related bits and bobs.

St Helens

Mount St Helens. My summer trip this year was to the North West of the USA and one of the places I had to go was Mount St Helens. This mountain used to have a peak and when it blew up it lost over a cubic Km of material, a lot of it you can see below in the valley and is now eroding away. The mountain has a central dome in the crater that has grown by 87 storeys in the years since the major eruption and produces steam all the time. There are still many trees lying around where they we blasted thirty years ago. I did get so see some other cool stuff to, maybe more later....

Great Dates in Sci and Tech for September

1st 1859 ~ A solar superstorm affects electrical telegraph service, if it happened today satellite TV and phones could fail.

4th 1956 ~ The IBM RAMAC 305 is introduced, the first commercial computer that used a magnetic storage disk

7th 1927 ~ Philo Farnsworth makes the first fully electronic TV system

8th 1930 ~ 3M begins marketing transparent tape, the Cellotape age begins

10th 2008 ~ The Large Hadron Collider at CERN is powered up, still no black holes

14th 1752 ~ The British Empire adopts the Gregorian Calendar, going from the 2nd of September to the 14th overnight.

18th 1984 ~ Joe Kittinger ( who also holds the longest time highest parachute jump record, height has gone to Baumgartner) completes the first solo balloon crossing of the Atlantic

20th 1633 ~ Galileo is tried before the Inquisition for teaching that the Earth orbits the Sun

23rd 1846 ~ Neptune is discovered by Le Verrier and Adams and verified by Galle

27th 1905 ~ Einstein published E= mc²

28th 1928 ~ Fleming notices the bacterial killing mould that becomes known as penicillin

30th 2004 ~ First pictures of a giant squid in its natural habitat are taken in the Pacific

Something to try. Making a bullroarer.
Bullroarers are instruments that go back thousands of years and were used all over the world for communicating over long distances.

Traditionally they are made of flat pieces of wood attached to string.

They are swung in a circles and as they do so they spin.

As they cut through the air they make a noise. You can get the effect by using an ordinary ruler.

Putting string through the hole in the end. A metre will be enough and then having made it secure swing it.

The sound is hard to describe, a whirring comes close but why they have the name they do is anybody's guess vHealth and safety. Loud noises can damage ears. String can cause friction burns or worse. Do not hit anybody with the ruler.

Photos from the first spacecraft to rendezvous with a comet.

China's super caves