diatoms - california academy of sciences geology
1. Biddulphia deodora - Miocene, ph#000058D,scale bar = 10 µm
2. Actinoptychus chenevierei - holotype, Cretaceous, ph#000677D, scale bar = 10 µm
3. Lithodesmium margaritaceum - Cretaceous, ph#000865D, scale bar = 10 µm
4. Aulacodiscus currus - holotype, Eocene, ph#001088D, scale bar = 10 µm
5. Triceratium diversum - holotype, Eocene, ph#001131D, scale bar = 10 µm
6. Triceratium swastika - Cretaceous,
Did you miss math?
Enamel works by Alisa Mantulina
Plate from Geometria et perspectiva  – Lorenz Stoer David Wade’s ‘Fantastic Geometry – Polyhedra and the Artistic Imagination in the Renaissance’ is a fascinating entrée into the works of group of artists who published books containing enigmatic and fantastical depictions of geometric forms in Germany during the mid-sixteenth century. Densely illustrated publications by Wenzel […]
Hi everyone, next week I start a tour of Finland. I’ll be talking about Enigma and code breaking because that’s my jam. Some of these talks are public, or at least might let you in, so you might want to come along. Here’s what I know:
Monday 29th September, 12pm and 5pm: åbo akademi, Turku. Arken Building.
Tuesday 30th, 6pm: Cafe Scientifique at Monitomitalo, Tampere.
Wednesday 1st of October, 10am: Tampere University of Technology.
Thursday 2nd, 1pm: Aalto University,
No Ceilings: The Full Participation Project, an initiative from the Clinton Foundation, aims to highlight progress towards global gender equality …Tags: Clinton Foundation, Fathom, gender equality, video
(Click on the comic if you can't see the full image.) (C)Copyright 2014, C. Burke.Doesn't anything before 11 or after 8 in the morning? She cried, "Moe! Moe! Moe!" Nyuk, nyuk! Wiseguy!
One of our own, Lee Bradley, has just written a book called A Programmer’s Guide to the Meaning of Life. Knowing a little about Lee’s eclecticism, this is sure to be a good read. I’m heading to pick up a copy now at lulu.com. Go Tunxis community!
Counting in binary
Instead of counting up to five on each hand, a binary system can be used to count up to 31 on one hand, and up to 1023 on two hands. This is done by using your fingers to represent increasing numbers, multiplying by two each time.
Once the numbers 1, 2, 4, 8 and 16 are assigned to the fingers, as above, different numbers can be represented by raising or tucking in the fingers. A raised finger represents its number being “on”, whereas a lowered