Doodle Science - September 2013

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

Try as I might I could not get a picture that did Venus justice. The bright star is the planet Venus (honest) that was visible in the sun set and still is, (if we get any clear nights) for quite a while The Naked Eye Planets is worth a look. Remember STEM is the acronym for Science, Technology, Engineering and Maths too and I have maths shows.
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. Autumness.

Now is the time to look for invertebrates,
many of them are now as large as they are going to get and will be either laying eggs
for the new generation or preparing to over winter and the numbers are at their highest.
I know spiders are not everybody's favourites but dragonflies are impressive creatures and the large moths should be about too.
Seeds and fruits are also at their most abundant and the with the changes in temperature,
particularly the difference between day and night many of the leaves will be starting to change.
Something else to try. Density

Different liquids have different densities and can be made to float on each other.
In a narrow but tall glass very carefully pour in golden syrup, then washing up liquid,
then water and finally cooking oil. There are loads of other possibilities, you can look up densities,
including finishing with vodka but there are other things you can do with that.
So far this is a simple and oft repeated demo, but now for the clever bit.
Gently drop in bits of fruit, apple, grapes, pineapple, even a chip. They will float at different boundaries.

Interesting ideas to tax even the sharpest brain at New Scientist Last Word, interesting unanswered questions