<div dir="auto">The thing is, astronomical images involve time exposures. Using the same telescope you could see the thing directly if your retina were sufficiently sensitive. Not going to happen.<div dir="auto"><br></div><div dir="auto">The above involves speculation on my part. Also I am highly medicated.</div><div dir="auto"><div dir="auto"><br><div data-smartmail="gmail_signature" dir="auto">-----------------------------------<br>Frank Wimberly<br><br>My memoir:<br><a href="https://www.amazon.com/author/frankwimberly">https://www.amazon.com/author/frankwimberly</a><br><br>My scientific publications:<br><a href="https://www.researchgate.net/profile/Frank_Wimberly2">https://www.researchgate.net/profile/Frank_Wimberly2</a><br><br>Phone (505) 670-9918</div></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Apr 10, 2019, 6:25 PM Nick Thompson <<a href="mailto:nickthompson@earthlink.net">nickthompson@earthlink.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Eric, <br>
<br>
May I have leave to ask you a ==> really dumb question<==? <br>
<br>
What does it mean to say that we have "seen" a black hole? It's a metaphor, right? In the sense that saying that we have "seen" an electron is a metaphor. And there is a lot of equipment that has been aggressively designed to make that metaphor seem ... um ... less ... um... metaphorical. Is the seeing of a black hole any more or less direct than the seeing of an electron? <br>
<br>
Thanks, if you have time to tangle with this. <br>
<br>
Nick <br>
<br>
Nicholas S. Thompson<br>
Emeritus Professor of Psychology and Biology<br>
Clark University<br>
<a href="http://home.earthlink.net/~nickthompson/naturaldesigns/" rel="noreferrer noreferrer" target="_blank">http://home.earthlink.net/~nickthompson/naturaldesigns/</a><br>
<br>
-----Original Message-----<br>
From: Friam [mailto:<a href="mailto:friam-bounces@redfish.com" target="_blank" rel="noreferrer">friam-bounces@redfish.com</a>] On Behalf Of Eric Smith<br>
Sent: Wednesday, April 10, 2019 4:49 PM<br>
To: The Friday Morning Applied Complexity Coffee Group <<a href="mailto:friam@redfish.com" target="_blank" rel="noreferrer">friam@redfish.com</a>><br>
Subject: Re: [FRIAM] da foist pictures of a black hole<br>
<br>
Indeed, Gil,<br>
<br>
I was just on the piont of writing to the list, because I was surprised at no traffic on this stunner.<br>
<br>
There is a photomontage I would love to have, which I think doesn’t exist yet, but now can.<br>
<br>
Full M87 in the visible:<br>
<a href="http://hubblesite.org/image/2391/gallery" rel="noreferrer noreferrer" target="_blank">http://hubblesite.org/image/2391/gallery</a><br>
(which I guess is about a 100-arcsecond image)<br>
<br>
The M87 jet in the radio:<br>
<a href="https://apod.nasa.gov/apod/image/0007/m87jet_hst_big.jpg" rel="noreferrer noreferrer" target="_blank">https://apod.nasa.gov/apod/image/0007/m87jet_hst_big.jpg</a><br>
(maybe 10-20 arcsecond scale)<br>
<br>
The 7-arcsecond close-up of the jet in radio (VLA), X-ray (Chandra), and visible (Hubble), which is mostly motivated by understanding the “knot” they label HST-1:<br>
<a href="http://chandra.harvard.edu/photo/2001/0134/M87_scale.jpg" rel="noreferrer noreferrer" target="_blank">http://chandra.harvard.edu/photo/2001/0134/M87_scale.jpg</a><br>
<br>
And now the 50-microarcsecond images of the central black hole <a href="https://aasnova.org/2019/04/10/first-images-of-a-black-hole-from-the-event-horizon-telescope/" rel="noreferrer noreferrer" target="_blank">https://aasnova.org/2019/04/10/first-images-of-a-black-hole-from-the-event-horizon-telescope/</a><br>
<br>
To see a world in a grain of sand.<br>
<br>
<br>
So one good thing will have happened today,<br>
<br>
Eric<br>
<br>
<br>
<br>
<br>
<br>
<br>
> On Apr 11, 2019, at 7:28 AM, Gillian Densmore <<a href="mailto:gil.densmore@gmail.com" target="_blank" rel="noreferrer">gil.densmore@gmail.com</a>> wrote:<br>
> <br>
> <a href="https://www.nytimes.com/2019/04/10/science/black-hole-picture.html" rel="noreferrer noreferrer" target="_blank">https://www.nytimes.com/2019/04/10/science/black-hole-picture.html</a><br>
> <br>
> ^ now that is amazing. Keep kicking arse science! <br>
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