Neutrinos & Leap Year | SciByte 35

Neutrinos & Leap Year | SciByte 35

We take a look at the “are they / aren’t they travelling faster than the speed of light” Neutrino’s, a Legged Squad support robot that is both awesome and frightening, the science of leap year, tornadoes on the sun, space craft updates and as always take a peek back into history and up in the sky this week.

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Show Notes:

*— UPDATE — *

Neutrino News

*— NEWS BYTE — *

Legged Squad Support System (LS3)


Science of Leap Year

  • The low down
  • A day, defined by how long it takes for a star to appear in the same place again, is 23 hours, 56 minutes and 4 seconds.
  • During that time the Earth has moved forward one day in it’s orbit of the sun in order to keep up with this so that the Sun appears the in same place you have to add about 3min 56 seconds, and that’s where 24 hours comes from.
  • Earths orbit is not precisely circular, it is actually a eccentric circle
  • Average Year is 365.242374 days long, that’s 365 days, 5 hours, 49 minutes, 12 seconds
  • Significance
  • Adding a day every fours years makes the average 365.25, which gets closer than the calenders 365
  • Leap year are there to keep the calender aligned so that roughly noon on Dec 21 (solstice) the same point on the Earth is tilted towards the sun.
  • To get even closer every 100 years is not a leap year but every 400 years is a leap year.
  • * Of Note*
  • Related to the Year 2000 computer program, many programs would have calculated leap year incorrectly
  • For example, 1600 and 2000 were leap years, but 1700, 1800 and 1900 were not. Similarly, 2100, 2200, 2300, 2500, 2600, 2700, 2900 and 3000 will not be leap years, but 2400 and 2800 will be.
  • Multimedia
  • IMAGE : Gregorian Calendarleap solstice @ Wikipedia
  • Social Media
  • Twitter Results for [#LeapYear](!/search/leapyear)
  • Further Reading / In the News
  • Earth’s Orbit Creates More Than A Leap Year: Orbital Behaviors Also Drive Climate Changes, Ice Ages @ ScienceDaily
  • How could the year 2000 be a leap year when 1900 was not? @ HowStuffWorks.

Solar Tornado

SPACECRAFT UPDATE - Solar Dynamics Observatory

* SPACECRAFT UPDATE - Opportunity*


Looking back

  • Mar 06, 1869 : 143 years ago : Periodic Table : Dmitry Mendeleev published his first version of the periodic table of the elements. He was a Russian chemist who developed the periodic classification of the elements. In his final version of the periodic table (1871) he left gaps, foretelling that they would be filled by elements not then known and predicting the properties of three of those elements. The Periodic Table | SciByte 10 (Aug 3, 2011)
  • Mar 06, 1950 : 62 years ago : Silly Putty : Silly Putty was introduced as a toy by Peter Hodgson, a marketing consultant, who packaged one-ounce portions of the rubber-like material in plastic eggs. It could be stretched, rolled into a bouncing ball, or used to transfer colored ink from newsprint. The original discovery was made in 1943 by James Wright who combined silicone oil and boric acid at the laboratories of General Electric. He was researching methods of making synthetic rubber, but at the time no significant application existed for the material. However, it was passed around as a curiosity. Hodgson saw a sample and realized its potential simply for entertainment and coined its name for marketing it as a toy. Its popularity made him a millionaire.

Looking up this week

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