Connor has fashioned some pretzels into the shape of two important symbols of physics - lambda and h-bar.
Connor says: "Inspired by your videos, I made pretzels of my 2 favorite symbols. Thought you'd like to see. I picked h-bar because I have been studying Max Planck recently and Lamda as a tribute to Einstein's self proclaimed 'greatest mistake': the cosmological constant."
Below are some videos on the topics (we did h instead of h-bar)...
Midway through the video (below), Dr Darren Walsh uses a clever contraption to count the atoms in his body (based on his weight).
A few people have asked to see the full details in the list.
Dr Walsh has kindly supplied it.
Oxygen Mass: 41.925 kg Atoms: 1.578273 x 10^27 Carbon Mass: 11.61 kg Atoms: 5.821916 x 10^26 Hydrogen Mass: 6.45 kg Atoms: 3.854385 x 10^27 Nitrogen Mass: 1.935 kg Atoms: 8.320665 x 10^25 Calcium Mass: 967.5 g Atoms: 1.453978 x 10^25 Phosphorus Mass: 645 g Atoms: 1.254234 x 10^25 Potassium Mass: 161.25 g Atoms: 2.484017 x 10^24 Sulphur Mass: 161.25 g Atoms: 3.028875 x 10^24 Sodium Mass: 96.75 g Atoms: 2.534716 x 10^24 Chlorine Mass: 96.75 g Atoms: 1.643656 x 10^24 Magnesium Mass: 32.25 g Atoms: 7.991844 x 10^23 Iron Mass: 0.387 g Atoms: 4.174249 x 10^21 Fluorine Mass: 2.3865 g Atoms: 7.565841 x 10^22 Zinc Mass: 2.064 g Atoms: 1.901418 x 10^22 Silicon Mass: 1.29 g Atoms: 2.766434 x 10^22 Rubidium Mass: 0.2967 g Atoms: 2.090874 x 10^21 Strontium Mass: 0.2967 g Atoms: 2.039516 x 10^21 Bromine Mass: 0.18705 g Atoms: 1.409945 x 10^21 Lead Mass: 0.10965 g Atoms: 3.187365 x 10^20 Copper Mass: 0.0645 g Atoms: 6.113421 x 10^20 Aluminium Mass: 0.056115 g Atoms: 1.252637 x 10^21 Cadmium Mass: 0.04644 g Atoms: 2.488263 x 10^20 Cerium Mass: 0.036765 g Atoms: 1.580373 x 10^20 Barium Mass: 0.019995 g Atoms: 8.769378 x 10^19 Tin Mass: 0.01548 g Atoms: 7.854101 x 10^19 Iodine Mass: 0.01032 g Atoms: 4.897965 x 10^19 Titanium Mass: 0.008385 g Atoms: 1.055066 x 10^20 Boron Mass: 0.044505 g Atoms: 2.479453 x 10^21 Selenium Mass: 0.012255 g Atoms: 9.348007 x 10^19 Nickel Mass: 0.00903 g Atoms: 9.266406 x 10^19 Chromium Mass: 0.001548 g Atoms: 1.793135 x 10^19 Manganese Mass: 0.010965 g Atoms: 1.202121 x 10^20 Arsenic Mass: 0.01677 g Atoms: 1.348152 x 10^20 Lithium Mass: 0.0019995 g Atoms: 1.735051 x 10^20 Mercury Mass: 0.012255 g Atoms: 3.679738 x 10^19 Caesium Mass: 0.0013545 g Atoms: 6.138313 x 10^18 Molybdenum Mass: 0.008385 g Atoms: 5.262907 x 10^19 Germanium Mass: 0.008385 g Atoms: 6.953443 x 10^19 Cobalt Mass: 0.0013545 g Atoms: 1.384305 x 10^19 Antimony Mass: 0.007095 g Atoms: 3.509624 x 10^19 Silver Mass: 0.000645 g Atoms: 3.601465 x 10^18 Niobium Mass: 0.1032 g Atoms: 6.690322 x 10^20 Zirconium Mass: 0.387 g Atoms: 2.55514 x 10^21 Lanthanum Mass: 0.00903 g Atoms: 3.915446 x 10^19 Tellurium Mass: 0.00774 g Atoms: 3.65345 x 10^19 Gallium Mass: 0.00774 g Atoms: 6.686175 x 10^19 Yttrium Mass: 0.007095 g Atoms: 4.806566 x 10^19 Bismuth Mass: 0.007095 g Atoms: 2.044842 x 10^19 Thallium Mass: 0.007095 g Atoms: 2.090835 x 10^19 Indium Mass: 0.0001806 g Atoms: 9.473721 x 10^17 Gold Mass: 0.00903 g Atoms: 2.761265 x 10^19 Scandium Mass: 0.00903 g Atoms: 1.209801 x 10^20 Tantalum Mass: 0.00903 g Atoms: 3.00571 x 10^19 Vanadium Mass: 0.01677 g Atoms: 1.982778 x 10^20 Thorium Mass: 0.00008385 g Atoms: 2.17649 x 10^17 Uranium Mass: 0.00008385 g Atoms: 2.121711 x 10^17 Samarium Mass: 0.00000645 g Atoms: 2.583689 x 10^16 Tungsten Mass: 0.00000645 g Atoms: 2.113161 x 10^16 Beryllium Mass: 0.000003225 g Atoms: 2.155324 x 10^17 Radium Mass: 0.00000000000000645 g Atoms: 1.718954 x 10^07
And here is the automatically generated pic of Dr Walsh on the scales at Science Gallery!
I'm just back from a brief but successful trip to Dublin, in Ireland.
The main reason was to give a public talk at the Science Gallery.
It was about making science films and, as always, I enjoyed the opportunity to discuss my work.
I also checked out the gallery's excellent "Elements" exhibition, which runs until September 23.
It was really good and any science buff will love it. Worth a cheap flight to Dublin if you can afford it!!!
I was joined on the trip by two of our Irish science stars - Phil Moriarty from Sixty Symbols and Darren Walsh from periodicvideos.
The pair helped me out with a few films we'll be posting in the coming weeks.
Professor Moriarty did three (or "tree", as he would say in his Irish lilt).
We discussed Erwin Schrödinger at the lecture theatre bearing his name at Trinity College.
We also discussed Ireland's only science Nobel Prize winner - Edwin Walton.
And of course we did a video about Guinness, the famous Irish drink which is jam-packed with interesting science stuff.
Dr Walsh joined me at the Science Gallery exhibit I mentioned above, and we'll have some videos coming soon about periodic tables and elements.
They should be fun and will include a few little "gimmicks" that I think chemistry fans will love, including a really cool platinum sample and a periodic table in Braille!
PS: We didn't drink the Guinness - neither Professor Moriarty or I are particularly fond of it!
PPS: To some viewers, Mike is best-known for having the controversial Atlas of Creation on his bookshelf... It has been so contentious, we even made a video about it.
These two photos, which just arrived this evening, definitely caught my eye.
I'll show them first, with explanation below.
The pics came from a chap in Amsterdam.
His email said:
"I like the updates on your videos, I watched them with great joy! All of your videos I've watched on my computer which is on my table, or shall I call it my periodic table? I'm an element collector, so far i've got 46 (or 47, if you realize that my empty Nitrogen compartment is acually filled for 78% with Nitrogen) and all of my specimens are in my desk. Keep uploading videos! Greetings from Amsterdam PS: I realize my periodic table is upside down, but this way it's more convenient ;)"
Markus discussed, among other things, the famous Whomping Willow which appears in some of the films.
In particular, he questioned whether it's truly a willow.
It was all tongue-in-cheek, but like a typical scientist Markus has since delivered me the following analysis (for the true tree enthusiast).
"It appears that there are actually two different 'whomping willows' in the Harry Potter films.
"Both are amalgams of several different trees, though in fairness, freezing frames on the DVDs reveals that they have been dressed with appropriate willow leaves.
PS: Special shout-out to Professor Merrifield from Sixty Symbols who loves QR codes much more than me and will be rather smug about the fact I've done this!
Received some fascinating photos from a fan in Colombia.
I'll just share the email...
Hi, I'm a chemist from Colombia. I want to share with you a few photos of the 140's periodic table birthday. This event was made in the Antioquia University (Colombia) due to a huge effort of the group "Metodologies in Chemistry Teaching" at Chemistry Institute of the University. And welcome at any moment in Colombia. Thanks for you magnificent project. Johnatan Diosa Arango Químico Grupo de Coloides Universidad de Antioquia
It occurs to me that we didn't do anything to mark the 4th of July.
So I thought I'd share this older video I filmed during a visit to the US a while back (it includes a pledge of allegiance, which caused plenty of chat in the YouTube comments section).
And The Prof answering questions from US students.
Blog goes behind the scenes with video journalist Brady Haran.
Brady's working on various projects, including the successful Periodic Table of Videos, Sixty Symbols and Numberphile.