Recent content by Lino

Thank you Peter (and everyone), This does make sense to me, not so much that I could explain it again but enough to inform my direction of reading :) But it does kind of lead me back to the original question ... (I'll try again but please forgive my clumsy language) if the spacelike plane...

Thanks for the reply Peter. Most of this makes sense, but if I may confirm ... LIGO has picked a set of coordinates by building the experiment (3d and time), and so they are measuring the wave from a specific angle. Is that correct? Also, am I correct in thinking that none of the coordinates /...

Can I post my read of the OP's question in a slightly different way in order to ask for clarification: If the GW is causing a measurable distortion of space (and the frequencies being detected), and the total distortion is in space-time, how does one determine the "space" only element in order...

Thanks Dave and excellent photo on the other thread. I'm super impressed that you can get that type of result from a single image. I'll count that as a target to aim for :) Regards, Noel.

Thanks Andy. I forgot about the focal length. That makes perfect sense. My experience so far is ... limited. I spend an amount of time in a Dark Sky Reserve in the south west of Ireland (Kerry), which is fantastic. When the skies are clear, it is amazing, but given that it is the south west of...

Andy, Nice photos, well done. I'm quite new to this type of imaging, so wondering if you could elaborate on the meaning of these numbers / settings? Is it: number of shots / f-stop / total time / shutter speed / ISO? Regards, Noel.

Thetexan, Maybe I could just add one more thing that helps me ... It is not the entire universe that fits into an observable sphere, it is the entire OBSERVABLE (caps only for emphasis, not a shout :) ) universe that fits into an observable sphere. If you could step outside our observable...

Thanks Chronos. I'll read that later. Regards, Noel.

Thanks Bandersnatch.

Hi, The extract below is from a paper on ARXIV that I was reading recently. In this paper (and a number of others that I have read recently) there are a number of references to "wind" in a cosmic context. What is this wind? I have tried to do a number of searches to try to find out, but I can't...

Understood, and thanks, Chalnoth.

Hi, I have been reading a number of papers by Dragan Hajdukovic's on his work related to models for dark matter. How mainstream / well regarded is his work / models?

Thanks again Drakkith (& all). Regards, Noel.

Thanks Drakkith, and there in lies my problem of understanding (and I appreciate that it is "my problem of understanding"). I would completely accept that if (using the calculator and graph provided earlier - http://lamp.tu-graz.ac.at/~hadley/ss1/emfield/blackbody.php and graph reproduced for...

All, Maybe I could ask a basic question about power spectrums generally. I think that my problems come from a basic lack of understanding of power spectrums, and if you could recommend a "starter" book or article, that would be very much appreciated. In the meantime ... if I may, I would have...