bkinstle
bkinstle t1_j4lns1a wrote
Reply to comment by noclue72 in How do non electric heat operated fans work? by ranman12953
Stirling engines have lots of moving parts but peltier fans just have a small white square about 4mm thick between two metal structures without why moving parts safe for the fan itself
bkinstle t1_iyc10g9 wrote
Reply to comment by mfb- in What stabilizes a Neutron in a Nucleus from Neutron Decay? by UnifiedQuantumField
Cool thanks for the reply.
When I said breaking off a chunk I was thinking about when an atom fissions. Does that happen as a process of natural decay or only when triggered for example by a neutron released from a nearby atom?
bkinstle t1_iybztbf wrote
Reply to comment by mfb- in What stabilizes a Neutron in a Nucleus from Neutron Decay? by UnifiedQuantumField
Is this what causes some atoms to be radioactive? Some neutron in the cluster of the nucleus isn't quite completely bound as well as the others so everyone it decays, and then the chunk of the nucleus it was holding together breaks off?
bkinstle t1_ixkns5z wrote
They did on CRT tubes. When I worked at Apple we had a big enclosure made of coils with a wooden desk in the middle. There was a map on the wall of the earth and you could pick any location, read the parameters from the chart and type them into a control panel to filter the Earth's magnetic field in that location inside the chamber.
When we still made CRT monitors they were calibrated for certain geographic regions and we tested that calibration in this machine. There was always a push to make fewer monitor calibrations but the best we ever got to was northern and southern hemisphere models
bkinstle t1_jbaapys wrote
Reply to comment by Astrokiwi in When humans next land on the moon, will our telescopes from Earth's surface be able to photograph the rocket on the moon's surface? by Nswl
Would it be better with a space telescope like Hubble?