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3Episodes
Category: Science & Medicine

A fun take on the latest science news with enough data to sink your teeth into. Lagrange Point goes beyond the glossy summary and gets in depth with the research from across the world.

November 12, 2018

Episode 300 - Once in a blue asteroid, hidden objects in the Lagrange Point

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In our 300th episode we return to our roots, the Lagrange Point. We find out about some odd objects hanging out at Earth's Lagrange Point, and how satellites can survive fierce solar storms only to be undone by a stiff breeze. Plus something rarer than a blue moon, a blue asteroid!

  1. Judit Slíz-Balogh, András Barta, Gábor Horváth. Celestial mechanics and polarization optics of the Kordylewski dust cloud in the Earth–Moon Lagrange point L5 – Part II. Imaging polarimetric observation: new evidence for the existence of Kordylewski dust cloudMonthly Notices of the Royal Astronomical Society, 2019; 482 (1): 762 DOI: 10.1093/mnras/sty2630
  2. Richard B. Horne, Mark W. Phillips, Sarah A. Glauert, Nigel P. Meredith, Alex D. P. Hands, Keith A. Ryden, Wen Li. Realistic Worst Case for a Severe Space Weather Event Driven by a Fast Solar Wind Stream. Space Weather, 2018; DOI: 10.1029/2018SW001948
  3. University of Arizona. (2018, October 29). Rare blue asteroid reveals itself during fly-by. ScienceDaily. Retrieved November 9, 2018 from www.sciencedaily.com/releases/2018/10/181029152849.htm
November 5, 2018

Episode 299 - Redefining the kilogram a history of measurement

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Have you ever stopped to wonder what ruler rules them all? How we set the standard for height, for weight, for everything around us? What if you weighed one thing one day, and travelled to another country and suddenly gained 5 kgs or had to use an entirely different weight system? What if you weighed one thing this week and more the next? This week we find out the history measurement systems, how we've standardised them and come up with unique and repeatable measures that don't rely on artefacts (real and metaphorically).

References:

  1. Suplee, C., Lauren Lee, J., Gillespie, A., Porter, G., Stein, B., & Phillips, B. et al. (2018). A Turning Point for Humanity: Redefining the World’s Measurement System. Retrieved from https://www.nist.gov/si-redefinition/turning-point-humanity-redefining-worlds-measurement-system
  2. Jabbour, Z., & Yaniv, S. (2001). The kilogram and measurements of mass and force. Journal of Research of the National Institute of Standards and Technology, 106(1), 25. doi:10.6028/jres.106.003
  3. Newell, D. B. (2014). A more fundamental International System of Units. Physics Today, 67(7), 35-41. doi:10.1063/pt.3.2448
  4. Bureau International des Poids et Mesures. (n.d.). On the future revision of the SI. Retrieved from https://www.bipm.org/en/measurement-units/rev-si/