62 search results for: "Science Break"

Science Break : Electrical & EM Methods

Science Break articles. On circadian rhythms (December 2013 RECORDER) I read about a company which offers a clock that, “monitors sleep patterns… and uses coloured lights customized to your circadian rhythms to facilitate sleep, and to wake you at an optimal time.” (National Post, 2014) To find out more, Google…

Science Break | May 2014

Science Break : Cogeneration

Science Break articles, something I really enjoy. On the topic of war, encryption and crosswords, Jim Laing drew my attention to a WWII story involving a Surrey, England headmaster who was a regular crossword author. English intelligence noticed a suspiciously high number of their “secret” code words were showing up…

Science Break | May 2013

Science Break : Hominin Update (Part 2)

Science Break article. In the abbreviated section below on DNA sequencing I draw heavily on Svante Pääbo’s Neanderthal man: in search of lost genomes, a book that I highly recommend to readers who want to pursue this topic further. Pääbo has played a central role in the push to salvage,…

Science Break | June 2018

Science Break : Automatic Transmissions

Science Break article (Kuhn, 2012) on the Antikythera device, an ancient machine that used planetary gears to predict the positions of the known (then) planets in our solar system. In Figure 3, if the carrier (green) is rotated 45° clockwise then the planet gears (blue) turn within the fixed ring…

Science Break | September 2017

Science Break: Metal Leaching

Science Break article on steel. Leaching Leaching, in the general sense, describes the extraction of a substance from a solid by dissolving the solid in a liquid. When a solvent is added to the solid (made up of an insoluble carrier and the desired solute), the solid separates into a…

Science Break | March 2017

Science Break : Morality

Science Break article on heuristics, and morals deal almost entirely with areas lacking complete information. Research has shown that the brain circuitry for heuristics gets shaped and modified through experience and learning, especially during childhood, so this would explain how moral beliefs can be so different from one community to…

Science Break | November 2014

Science Break : Immaculate Conception, Christmas, Etc.

Science Break articles; the challenge will be to find the time! Happy New Year everyone. References alex. (2011, August 1). The Doctor Who Stacked Weights on His Testicles. Retrieved December 12, 2013, from Mad Science Museum: http://www.madsciencemuseum.com/msm/pl/sensitive_testes Anonymous blogger. (2012, February 18). Tusko’s Trip. Retrieved December 12, 2013, from The…

Science Break | January 2014

Science Break : Circadian Rhythms

Science Break article “Plant hydraulics” (Kuhn, 2013), even plants are capable of fairly rapid response to external stimuli, and of course animals are too. But those responses are not circadian; in order to meet the criteria, the system must more or less lock in to a 24 hour clock, and…

Science Break | December 2013

Science Break : Natural Gas Liquids

Science Break article, “Africa’s deadly lakes” concerning heavy gases. (Kuhn, 2009). Normal Butane This is the unbranched form of butane (n-C4H10), where the four carbon atoms are connected in a continuous chain. It has numerous uses – in lighters, camp stoves etc., as a propellant for spray cans, and as…

Science Break | November 2012

Science Break : Weather Maps

Science Break” articles, and that’s great. If you have any ideas for future articles, please pass them on. Alternatively, if you’d like to submit your own article, please contact me. I’d love it if we could run guest articles. My contact info is oliver.kuhn@divestco.com or (403) 298-5639. Chris Irvine contacted…

Science Break | March 2009

Science Break : Calendars

…Calendars A friend of mine recently put forward the theory that differences in the historical levels of technical sophistication between human cultures are largely a matter of latitude. His thinking is that the further an ancient society lived from the equator, the more affected they were by the changing seasons.…

Science Break | October 2018

Science Break : Hominin Update (Part 1)

…The last few years have seen several significant finds related to human prehistory. There was the 2003 discovery of Homo floresiensis, aka “the hobbit”, a distinct (and extinct) species in the same genus as us, Homo. In 2017, more accurate dating pushed back the date of human arrival to Australia…

Science Break | March 2018

Science Break : Fireworks

…This past summer saw thousands of fireworks displays across Canada as we celebrated 150 years of Confederation. I’m sure few of us really understand how fireworks work, so this article will educate and prepare us for 2067, although if not dead by then I’ll certainly be deaf and blind. The…

Science Break | December 2017

Science Break : Animal Defense Systems

…One evening last summer our dog was in a frenzy – he’d cornered some critter under our deck, most likely a raccoon. However, the flashlight revealed a white, mangy little creature about the size of a cat. Its head, especially the jaw, was large in proportion to its body, and…

Science Break | January 2017

Science Break : CRISPR Genome Editing

…TCRISPR is a simple acronym to remember, but it refers to a very complex technology that promises to revolutionize gene editing and splicing. The letters stand for “clustered regularly interspaced short palindromic repeats”. The palindromic repeats are short repeated DNA sequences found in some bacteria that geneticists have been aware…

Science Break | September 2016

Science Break : Heart Attacks

…The spectre of heart attacks looms large in our collective psyche. We worry that one may strike us, or perhaps one of our at-risk relatives or friends will be afflicted. Some of us at times view them as retribution for an unhealthy lifestyle. But what do we really understand about…

Science Break | June 2016

Science Break : Reader Follow Ups & Blood Types

…Sometimes reader feedback leads to interesting dialogs. Two recent exchanges on DSLR cameras and ocean currents are worth sharing. First though, I want to apologise to all Cheeseheads. In Figure 1a from the Great Lake(s) article, I forgot to label the Green Bay lobe of the Laurentide Ice Sheet –…

Science Break | May 2016

Science Break : The Human Microbiota

…Growing up, I viewed the human body as a castle, with defenses to keep all the nasty bacteria and viruses out. White blood cells were the soldiers, sent off to do battle at breaches in the walls. In fairy tales everything good is inside the castle walls, everything bad outside;…

Science Break | April 2016

Science Break : Ocean Currents

…Besides the Gulf Stream, ocean currents are likely out-of-sight, out-of-mind for most people. I don’t even recall ocean currents being part of the geophysics undergrad curriculum, even though they should definitely fall under physics of the earth, with temperature and density physics explaining their dynamics. The following article is a…

Science Break | February 2016

Science Break : The Great Lakes

…Quaternary geology is fascinating, especially the late Pleistocene and into the Holocene (11,700 years ago to present) because it’s so recent, dynamic and all around us. In my article on the Spokane Flood (Kuhn, 2008), I alluded to the possibility that maybe, just maybe, humans had witnessed this catastrophic event.…

Science Break | January 2016