Saturday, September 25, 2021
Friday, September 24, 2021
Q&A : HOW TO MEASURE EXTREME DISTANCES - YUAN-SEN TING
LIGHT SECONDS, LIGHT YEARS,
LIGHT CENTURIES:
HOW TO MEASURE EXTREME DISTANCES
- YUAN-SEN TING
2,633,453 views
Oct 9, 2014
TED-Ed
14.8M subscribers
View full lesson: http://ed.ted.com/lessons/how-do-we-m...
When we look at the sky, we have a flat, two-dimensional view. So how do
astronomers figure the distances of stars and galaxies from Earth? Yuan-Sen
Ting shows us how trigonometric parallaxes, standard candles and more help us
determine the distance of objects several billion light years away from Earth.
Lesson by Yuan-Sen Ting, animation by TED-Ed.
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YUAN-SEN TING
TED-Ed
and YouTube and all the others who made this video possible.
THIS WEEK IN PICTURES (18-24 September)
PHOTO -
THE WEEK IN 10 PICTURES
(18-24 SEPTEMBER)
No views
Sep 24, 2021
AFP News Agency
1.26M subscribers
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AFP News Agency
and YouTube and all the others who made this video possible.
FUTUROLOGY : PETROVSKITE SOLAR, ENERGY OF THE FUTURE
PEROVSKITE SOLAR CELLS COULD BE
THE FUTURE OF ENERGY
784,103 views
Sep 14, 2021
Undecided with Matt Ferrell
611K subscribers
The perovskite solar cell could be the future of energy. Get Surfshark
VPN at https://surfshark.deals/undecided and enter promo code UNDECIDED for 83%
off and 3 extra months for free! What if we could build solar panels using
materials that aren't supply-limited and with a lower carbon process? As well
as achieving higher efficiencies at the same time? Perovskite solar panels have
been promising that future for some time now, but where are they? And are they
the future of solar panel technology? Let's explore Perovskite solar panels and
how they might energize our future.
Watch The Future of Solid State Wind Energy - No More Blades:
https://youtu.be/nNp21zTeCDc?list=PLn...
Video script and citations:
https://undecidedmf.com/episodes/pero...
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Thursday, September 23, 2021
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