28 Jan '18 16:11>
I know there must be very powerful microscopes now..but what is the smallest thing ever seen..An atom ? proton ? etc..
Originally posted by @ogbIt depends on what you mean by "the smallest thing ever seen." Elementary particles have no observable size, so any of them will do (electrons, photons, etc.).
I know there must be very powerful microscopes now..but what is the smallest thing ever seen..An atom ? proton ? etc..
Originally posted by @humywoops! That "would" should have been "wouldn't".
That, obviously, would involve breaking the known laws of physics but rather [/b]
Originally posted by @kazetnagorraI guess it even depends on what we mean by "see."
It depends on what you mean by "the smallest thing ever seen." Elementary particles have no observable size, so any of them will do (electrons, photons, etc.).
Originally posted by @ogbAre you talking about seeing visible light through a microscope?
I suppose if a persons observes something (even through a microscope), it becomes real. Before that, it is just a theory..
Originally posted by @wolfgang59well maybe I meant confirming a theory with the use of a super powerful microscope. I've seen on the net that atoms have actually been observed..
Are you talking about seeing visible light through a microscope?
Originally posted by @ogbAtoms, quarks, electrons, etc. etc. have all been directly observed.
well maybe I meant confirming a theory with the use of a super powerful microscope. I've seen on the net that atoms have actually been observed..
Originally posted by @kazetnagorraNot directly, if you are talking about the big boys like CERN, the giant accelerator there, stuff blows up, turns into other stuff, then hits detectors which shows a 1 instead of a 0. You get enough 1's and you have confirmed detection. Obviously not that simple since the angle of the dangle is measured too but you get the idea.
Atoms, quarks, electrons, etc. etc. have all been directly observed.
Originally posted by @sonhouseThis is a kind of direct observation. You shoot some stuff into each other and look at what comes out. So what?
Not directly, if you are talking about the big boys like CERN, the giant accelerator there, stuff blows up, turns into other stuff, then hits detectors which shows a 1 instead of a 0. You get enough 1's and you have confirmed detection. Obviously not that simple since the angle of the dangle is measured too but you get the idea.
Originally posted by @kazetnagorraWell, the look part is indirect, it's not like there is a camera watching the explosion of particles and their daughter particles and such. It hits a series of silicon detectors that go , PING, a one logic level is generated for that period of time and it takes a computer to put all the individual pings together to generate an 'image'. This is not image making, it is information used to generate a graph.
This is a kind of direct observation. You shoot some stuff into each other and look at what comes out. So what?
Originally posted by @sonhouseA photon enters your eye. A neuron goes PING. The principle is the same.
Well, the look part is indirect, it's not like there is a camera watching the explosion of particles and their daughter particles and such. It hits a series of silicon detectors that go , PING, a one logic level is generated for that period of time and it takes a computer to put all the individual pings together to generate an 'image'. This is not image making, it is information used to generate a graph.
Originally posted by @humyBesides that, the light that enters your eye is delayed in time so even that is not in the strictest sense 'direct'. For instance, to take an unlikely case, suppose we aim a telescope at Mars, we are seeing it a few minutes in the past so if a giant asteroid hit it we wouldn't even know for that few minutes so is that a 'direct' observation?
Before arguing about whether an observation is 'direct' or 'indirect', is would help to define what is generally meant by a "direct observation" versus an "indirect observation".
The problem as far as I can judge here is that there would be no criteria that most people would agree with for deciding whether an observation is 'direct' or 'indirect' nor on how t ...[text shortened]... t meaningless; does the same bit of light radiation you see directly enter your conscious brain?