Why does time appear to speed up as we get older? Can we slow it down?
Thanks to the National Geographic Channel for sponsoring this video!
The new season of Brain Games starts Sunday, February 14th at 9/8c – http://po.st/90S7Ow

Brain Games is an Emmy-nominated TV series that explores the inner workings of the human mind through experiments and interactive games. Did you know it’s estimated that you have more than a dozen senses in addition to the standard five? One of those is a sense of time or chronoception. Tune in to the new season of Brain Games to learn about all of your senses, and more, starting Sunday, February 14 at 9/8c

References:

Ageing and duration judgement:
http://bit.ly/1TRN0cr

Nerve conduction velocity slowing with age:
http://bit.ly/23Wq6oE

Experiments with rats suggest time perception is distributed across brain:
http://bit.ly/1T6IjdO

Time perception with repeated stimuli:
http://bit.ly/1TRNbo5

Energy usage in brain with age:
http://bit.ly/1nXliOU

Time perception in moments of fear / danger:
http://bit.ly/1RoK7Ps
http://1.usa.gov/1TRNa3w
http://bit.ly/1Q8tDvW

Attention’s relation to time perception and recollection of perceived time:
http://bit.ly/20odeD8
http://bit.ly/1TRNfEf

Which is the deadlier planet: Mars or Venus? And be sure to order your PBS Space Time t-shirt. http://store.dftba.com/collections/space-time

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Humans have been talking about space colonization for quite some time, but our neighboring planets are not exactly the most hospitable places. If we are ever going to be successful, we should probably figure out where we could reasonably expect to survive. In this episode of Space Time, Matt discusses which would kill you first… Venus or Mars?

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COMMENTS:

Jono Storm
https://www.youtube.com/watch?v=fHRqibyNMpw&lc=z13mcnszppvdydcrq04cgpnpwmuee1czqy00k

Vlad Tchompalov
https://www.youtube.com/watch?v=fHRqibyNMpw&lc=z13nhpxxszq0zzulz234tp3rbk2ky1lg404

AFastidiousCuber
https://www.youtube.com/watch?v=fHRqibyNMpw&lc=z13qxpq5yrmajjw4j04ceptx1xruerohrt00k

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Written and hosted by Matt O’Dowd
Made by Kornhaber Brown (www.kornhaberbrown.com)

What are… things?

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Now that we’ve broken down our preconceived notions about mass and time, let’s redefine what they really are. Since we know that time is not a universal constant, what is? On this week’s Space Time, Matt defines causal order and explains how even though time may look different to multiple observers, it is the one concrete reality that we can all agree on.

The True Nature of Matter and Mass
https://www.youtube.com/watch?v=gSKzg…

When Time Breaks Down
https://www.youtube.com/watch?v=GguAN1_JouQ
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FURTHER READING:

Lorentz Transformation
https://en.wikipedia.org/wiki/Lorentz_transformation
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COMMENTS:

Endre Kovács
https://www.youtube.com/watch?v=GguAN1_JouQ&lc=z12phnyohlrag1l5g04cj3byypregxqwciw

ectoplasm2369
https://www.youtube.com/watch?v=GguAN1_JouQ&lc=z12ftb25bu3xdpvkr23kxfvjnnz4x54mk

BrunoJMR
https://www.youtube.com/watch?v=GguAN1_JouQ&lc=z13cupk5ivbch53qm04ccjpwjq3jxhebbc0

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Written and hosted by Matt O’Dowd
Made by Kornhaber Brown (www.kornhaberbrown.com)

What time is it??? …And be sure to pre-order a Space Time t-shirt: http://dftba.com/spacetime

Rules: please give an explanation for your answer! Also, if you give an answer in the comments here you’ll be disqualified.

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Last week’s episode on Einstein’s photon clock thought experiment:
https://www.youtube.com/watch?v=GguAN1_JouQ

Question #1: When the clock is moving towards you, do you observe its hands to be ticking slower, faster, or at the same rate compared to the rate of ticks that you observe when it’s moving away from you?

Question #2: When the clock is moving towards you do you see its hands ticking slower, faster, or at the same rate as a second clock that is stationary with respect to you?

Make sure you title your email: “Photon Clock Challenge Answer”

5 random winners will receive a PBS Space Time Digital Studios t-shirt!

Good luck!
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Written and hosted by Matt O’Dowd
Made by Kornhaber Brown (www.kornhaberbrown.com)

This episode on the physics of time syncs perfectly with Pink Floyd’s ‘Dark Side of the Moon.’

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Last week we learned how motion gives matter its mass. But how does motion affect time? Let’s dive deeper into the true nature of matter and mass by exploring Einstein’s photon clock thought experiment, and the phenomenon that is time dilation.

Last Week’s Episode: The True Nature of Matter and Mass
https://www.youtube.com/watch?v=gSKzgpt4HBU

The Speed of Light is NOT About Light
https://www.youtube.com/watch?v=msVuCEs8Ydo
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Original thumbnail art by Charles Ballard
http://cdesignz2k.deviantart.com/art/Tic-Toc-a-space-time-clock-214287288
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COMMENTS:

Paramdeep Singh obheroi
https://www.youtube.com/watch?v=gSKzgpt4HBU&lc=z13gtjkwuv2luzwaw04cjlag3qmitx0ajco

Bernardo SOUSA
https://www.youtube.com/watch?v=gSKzgpt4HBU&lc=z123vrbrawvzjdj3i22pflhzekm0tputk

Joshua Hillerup
https://www.youtube.com/watch?v=gSKzgpt4HBU&lc=z133jfi4tw2bjdia204cfd1jgozeydsyikg0k

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Written and hosted by Matt O’Dowd
Made by Kornhaber Brown (www.kornhaberbrown.com)

Are matter, mass, and time real?

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We know that mass is energy… but what is energy? And where did matter and time even come from? Matt begins to dive into these intricate topics by first examining what inertial mass is, how it relates to gravitational mass, and what it all means for mass as a fundamental property.

The Speed of Light is NOT About Light
https://www.youtube.com/watch?v=msVuCEs8Ydo

The Real Meaning of E=mc²
https://www.youtube.com/watch?v=Xo232kyTsO0

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COMMENTS:

Caleb Limb
https://www.youtube.com/watch?v=kixAljyfdqU&lc=z13quhjzkvituzvmf23fx5oy5pzxilxeh

Felix Feist
https://www.youtube.com/watch?v=kixAljyfdqU&lc=z12fvxor4kn5jxexj04cgrhw2v2bv5rywf0

deathbypowerpoint
https://www.youtube.com/watch?v=kixAljyfdqU&lc=z124hzobmyvhxdx4n04cef5xzrjpwjob52c
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FURTHER READING:

Inertial Mass
http://www.physlink.com/Education/AskExperts/ae305.cfm

Equivalence Principle
https://en.wikipedia.org/wiki/Equivalence_principle
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Written and hosted by Matt O’Dowd
Made by Kornhaber Brown (www.kornhaberbrown.com)

What is the Higgs field and why is it a fundamental part of our universe?

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Quantum Field Theory is generally accepted as an accurate description of the subatomic universe. However until recently this theory had one giant hole in it. The particles it describes had no mass! The Higgs field and the Higgs mechanism were proposed long ago in order to give particles mass, but it was only in 2012 that the existence of the field was proved with the discovery of the Higgs boson by the Large Hadron Collider. In this episode of Space Time, we tell you exactly how the Higgs field can “give” something mass, which opens the door to a deeper understanding of what mass really is.
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Comments:

AFastidiousCuber
https://www.youtube.com/watch?v=xx4562gesw0&lc=z12gxfljuqeqybnvb22pijcjhympx3hyc04

Casteverus
https://www.youtube.com/watch?v=xx4562gesw0&lc=z13jhbdifmvvgtds122igdapnqjqe1vt4

Gareth Dean
https://www.youtube.com/watch?v=xx4562gesw0&lc=z12qfluaqqn1cbswj04chx1bhrjygnzoif0

WR3ND
https://www.youtube.com/watchv=xx4562gesw0&lc=z12xxhwzbpqgcpv2v221whw54p3ef5zs1

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Further Reading and Watching:

Leonard Susskind on the Higgs interaction:
https://www.youtube.com/watch?v=JqNg819PiZY

Gravitational waves heating up a star:
McKernan et al. 2014
http://arxiv.org/abs/1405.1414

Let’s build a black hole!

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Black holes have mystified physicists for decades, but with the help of quantum mechanics, we are beginning to make serious progress in understanding these strange objects. This week on Space Time, Matt dives deeper into the physical process of creating a black hole, and what that can tell us about how black holes behave.

For a primer/refresher, be sure to check out our previous video on Black Holes:
https://youtu.be/vNaEBbFbvcY

Also, check out our friends over at The Good Stuff. They made a video about a man attempting to build an Alcubierre Drive in his garage!
https://www.youtube.com/watch?v=ovDV711BszM
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Further Reading:

Pauli Exclusion Principle
https://en.wikipedia.org/wiki/Pauli_exclusion_principle

Heisenburg Uncertainty Principle
https://en.wikipedia.org/wiki/Uncertainty_principle

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Comments:

JoshuaSny
https://www.youtube.com/watch?v=dEIjKjIgCA0&lc=z123y1i5as2jvllut23tjfsaytbofldtl

moxshyfter
https://www.youtube.com/watch?v=dEIjKjIgCA0&lc=z12rw1zi5nfhw5avf22kurgosvyhz1guv

Sam Gilfellan
https://www.youtube.com/watch?v=dEIjKjIgCA0&lc=z13dhdcg0wbdt3fua23fvzew3qrdf5zoi04

Mohamed Zakaria
https://www.youtube.com/watch?v=dEIjKjIgCA0&lc=z13ehpfobty5e3jzb04cgda4ypmmdfhieus0k

Happy 100th birthday to Einstein’s theory of General Relativity!

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The results are in – on this weeks episode of Spacetime we reveal the answer to our Asteroid Challenge, as well as our T-shirt winners! Check out who saved the world!

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Congratulations To Our 5 Randomly Selected Winners!

Baptiste Loreau
Florian Jungbluth
Patrick Hanrahan
Andrés Daniel Wiegold Segalés
Degen Peter

If your name is listed above be sure to email pbsspacetime@gmail.com with your Full Name, Full Mailing Address, and preferred T-Shirt Size (small, medium, large, extra large etc.)

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Let us know what topics you want to learn more about:http://bit.ly/spacetimepoll

Cell biology gives clues to why we age and lobsters don’t.
I made another video! The future of energy: http://bit.ly/1MAiJKm
Check out Breakthrough, Sundays at 9/8c on Nat Geo with GE #ad

Animations are from Emmy-winning film ‘Immortal’, reproduced here courtesy of December Media and Genepool Productions (previously Pemberton Films)

Check out Immortal here: http://bit.ly/VeImmortal

Find out more about telomeres and telomerase here: http://bit.ly/WakeTelomeres

Special thanks to Dr. Fiona Ginty, Principal Scientist in the Life Sciences and Molecular Diagnostics Group at GE. Her research focuses on imaging different proteins within the cell. It’s both a very powerful technique and it’s beautiful.

Filmed by Raquel Nuno and Vasilios Sfinarolakis
Aging makeup by Heather Grippaldi: http://bit.ly/1Xebikh
Music by Kevin MacLeod, http://www.incompetech.com “Past the Edge” and “Lightless Dawn”