Recent content by Ralf66

I am curious as to roughly how many photons strike a camera sensor (e.g. a DSLR) in dim light, where the camera can form an image? Also how many photons are hitting a photosite for it to be triggered? and... how many photons have to hit a human rod (or cone) cell for it to be triggered and...

I used the same cable and it worked on another laptop, as per the OP. any ideas on what I can do to the Dell laptop?

My ancient Dell laptop used to work fine, but now I cannot access ethernet network we're on. It claims the speed is 1 Gbyte or 1 GHz too. I checked the connection by bringing in my MacBk Pro but that is not a viable option for this location. We have no "UT person" - it is roll your own. Any...