Detecting photons

[OConnor_LFC]

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 ?

[pzkpfw]

How do you see? Do photons need mass for your retina to react?

 

 

 

(That's also not quite an accurate description of the double-slit experiment.

 

https://en.wikipedia.org/wiki/Double-slit_experiment )

Edited May 16, 2016 by pzkpfw

[swansont]

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 ?

 

 

Photons have energy and momentum, and transfer this to the target when they interact.

[Enthalpy]

the experiment that was showing two photons hitting the detector when only 1 was fired through the slit

I doubt that.

No mass: maybe "hit" the detector is misleading. The photon bring an electric field that moves one or more electron. The effect on an electron is detected.