Detecting Photons: Uncovering the Invisible Particles

[Keiran OConnor]

How can we detect photons without mass ?

In the experiment that was showing two photons hitting the detector when only 1 was fired through the slit, how did technology detect photons without mass to hit the detector ?

 

[Nugatory]

How can we detect photons without mass ?
In the experiment that was showing two photons hitting the detector when only 1 was fired through the slit, how did technology detect photons without mass to hit the detector ?

Google for "photomultiplier".
Or you can use a piece of photographic film. When you develop the film, you get a dot wherever a photon landed.

However, I'm not sure which experiment you mean when you're asking about "the experiment that was showing two photons hitting the detector when only 1 was fired through the slit"

 

[houlahound]

Your phone camera is a photon detector more common than PMT. Easy to Google.

 

[Drakkith]

How can we detect photons without mass ?

Photons still have energy and momentum, despite having zero mass. Thus they can still be detected.

 

[Vanadium 50]

Your phone camera is a photon detector more common than PMT.

And your eye is more common than your phone camera.

 

[houlahound]

And green leaves are more common than eyes.