Recent content by GhostLoveScore

Because since I started this thread I switched to more accurate chip, TMP117, it has an accuracy of +/-0.1C, and even better then that.

Yes, current definition of taking an air temperature is at 2 meters above grass ground, in Stevenson screen. Like I said, I'm sure that many variables can cause different temperature readings. For example, if I moved my enclosure 5 meters to the right, the temperature would be slightly...

Yes, I know 1st one is wrong, but I wrote what I initially thought how it was. That was why I was confused. I forgot to take into consideration that the universe is expanding. Sounds stupid, I know, but initially I thought that the universe expanded like this: farthest points of the universe...

Ideally I want to be within 0.1 degrees from real value. But way too many things affect the temperature reading so I'm not sure how realistic is that goal of being within 0.1 degrees.

Then how can we tell if that radiation is emitted by a black body of 3000K in an expanding universe, or if it's emitted by 2.7K black body that's static in our frame of reference?

So the spectrum of the CMBR we see today is affected by 2 things: 1) redshift due to expansion of the universe, and 2) by the universe cooling down and its black body spectrum peak moving towards longer wavelength? (Wien's displacement law)

I'll just accept that it's infinite and try not to think about it too much 😆

I know, but that really bothers me.

I mean exactly what you wrote there: I'll try to write in a more scientific language from now on. OK, I think I get it now.

That would be a good choice, I think. Stevenson screen is great, when it's large enough. Unfortunately, large ones are harder to make, take up space or they are expensive if you buy them. Smaller ones are easy to carry and can be placed anywhere. A small fan at the top of the small enclosure...

That makes sense. Up until now I thought that what happened in the early universe was this: Universe was a very hot soup with photons "trapped" in it. Universe became transparent, releasing those photons. Photons started moving, and when they all left, that's it, no more CMB. In fact, what we...

Sorry for the late reply, I just didn't have the time due to very busy week (work and personal).

1: We should see light from some later age of the universe, I'm going to make up some numbers here: Let's say that when universe became transparent it was 5 billion light years across. Imagine we are sitting in the middle of that universe. For the next 2.5 billion years we would see CMB until...

Ah OK, yes, that definitely confused me. So, it's not like photon was "dragged out" when the universe expanded, it's more like - new space "formed" in all points in space making the distance longer?

Thanks, I'll read it the insights article. I can handle undergrad math, it's the things that I need to imagine in my head that bother me. Like the above mentioned expansion of the universe. I think I understand it but at some point I'll find some small thing that I don't understand and it will...