The Royal Institution
Neil Johnson demonstrates how light behaves both as a wave and as a particle using a series of double slit experiment setups.
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Watch the full fifth lecture of the series: http://www.rigb.org/christmas-lectures/watch/1999/arrows-of-time/shaping-the-future?utm_source=youtube&utm_medium=social&utm_term=description
From the fabric of space-time to the limits of the quantum world, Neil Johnson takes us on a journey through time in his 1999 Christmas Lecture series “Arrows of Time”.
In his fifth and final Christmas Lecture, Neil Johnson explores what quantum physics can reveal about the future.
Watch the full series: http://www.rigb.org/christmas-lectures/watch/1999/arrows-of-time
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Always a good idea to start with children and the historic example of the reasoning, that makes sense, but can be thought about by each individual child in other analogous situation.
Winding up the ducks, delicious
I tried the double slit experiment once, then someone turned the light on and I was in a whole load of trouble…
Is it possible that as a particle passes through a slit that it hits an inner edge of the slit causing it to bounce in another direction?
Is light a) a wave. B) a particle. c) both ? But there is an option that is never mentioned…..
None of the above
there is a new theory. LIGHT IS CONFORMED OF ONLY THREE PARTICLES. The same sistem we apply to color Red, Green and Blue, can explain light composition.
Particle wave theory says "hi"
Great display!!
Surprised by all the negative comments here – this was a great video. He shows practical, relatable demos for both wave like and particle behavior, and then runs an actual double slit experiment counting photons in real time – showing the particle and wave behaviour simultaneously. Maybe you guys prefer something with animations, but this is a very practical demo, and at that it is a very good one.
Also all the semantic arguments about whether the particle is "interfering with itself" are stupid – at the end of the day these are efforts to make something which is mathematically salient, but otherwise pretty counterintuitive make sense, as a result, many of the explanations are "wrong" on some level. This guy highlights a counter-intuitive paradox which I would argue is just as if not more affective at inspiring scientific curiosity than by offering a "complete" explanation (spoiler alert: there isn't one).
The medium light make use of is a wave! Light have many marvelous ways r, reflection being one among the many! But light can’t travel! Medium travel
Waves travel through a medium. The medium establishes the velocity of the waves. Even your ducks know this. Find the medium!
I hope we in India were more practical than theoritical
The claim in the title is to explain Wave Particle Duality – it barely managed to demonstrate the phenomenon and provided zero explanation.
What would happen if you did the double-slit thing and only leave the part of the screen that the smallest number falls on?
Time travel on a quantum level ,if we could time travel then things can be changed go were we want and so on ,but in quantum time travel the particles are open to time travelling quantum levels this means they are every were and at every point they could ever be if this is the case then only when we observe them do they behave as we would expect them to because at this point they are now in are reality as a perspective of are view on time ,so this is what i have come up with and this also works for spooky action from a distance and probably explains most if not all of the quantum physics how they have this ability is beyond me but i believe this is a step towards understanding quantum physics, iv named it QUANTUM TIME TRAVEL.
For a proper understanding of what is REALLY going on here, go to: https://youtu.be/NJjO2J7HTF8
Wouldn’t gravitational waves have a frequency that can move single particles of light… if they can move ligo and Virgo
What if there were more than 2 slits?
He looks so early nineties 🙂
This was recorded with a potato
To be honest, this was the most telling double-slit experiment I have ever seen. Wow….