Posts by Chris S


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1) Message boards : Number crunching : HP printer cartridges (Message 1564284)
Posted 31 minutes ago by Profile Chris SProject donor
I have an HP 840C Deskjet printer that takes Black No.15 and Colour No.17 ink cartridges. I also have an HP 950C inkjet printer that takes Black No.45 and Colour No.78 inkjet cartridges. And yet the physical cartridge sizes are identical. I can't see why they aren't interchangeable. What is the difference if any?
2) Message boards : Number crunching : Fundraising time again...... (Message 1564282)
Posted 47 minutes ago by Profile Chris SProject donor
Thank you for your gift of $20.00 via Visa on 08/29/2014.
Your gift will benefit the following area:

SETI@home - $20.00

Your confirmation number is: 136520
3) Message boards : Number crunching : Will the optimised apps still be faster with my old C2Q? (Message 1564274)
Posted 1 hour ago by Profile Chris SProject donor
Well the earth hasn't changed it's spin rate much since 99, so a Normal AR stays the same ;-)

(A Normal AR Wu is produced when the telescope is stationary, the earth rotates, so there is a change in where it was pointing,
A Very Low AR is where the telescope is pointed to a fixed point in space, when the earth rotates the telescope moves to remain fixed to that point in space,
a Very High Angle Range is when the telescope is actively moved around the sky)

I never fully understood that before, many thanks for the explanation!
4) Message boards : Cafe SETI : James' Puns O Fun 4 (Message 1564269)
Posted 1 hour ago by Profile Chris SProject donor
That's the yeast of our worries ....
5) Message boards : Cafe SETI : James' Puns O Fun 4 (Message 1564258)
Posted 2 hours ago by Profile Chris SProject donor
Does just one grain of salt means it's petred out?
6) Message boards : Cafe SETI : 12 step program (Message 1564256)
Posted 2 hours ago by Profile Chris SProject donor
Are you suggesting that Seti is addictive?

12 steps
7) Message boards : Cafe SETI : Missing Persons Bureau (a.k.a. The Mother Hens Thread) (Message 1564015)
Posted 13 hours ago by Profile Chris SProject donor
Just substitute BT for Carlsberg.

truck driver
8) Message boards : Number crunching : HP laptop power cords (Message 1563908)
Posted 15 hours ago by Profile Chris SProject donor
HP Recall
9) Message boards : Cafe SETI : The train thread (Message 1563848)
Posted 17 hours ago by Profile Chris SProject donor
Merehead Quarry or Torr Works is in Somerset so I would have expected them to use the Paddington lines. Bardon Hill is up in Leicestershire so North London, as is Acton. Day Aggregates are at Purley and Newhaven. I just find it interesting that so much freight is on those Croydon lines, nothing similar is ever seen on the Waterloo lines to the West Country.
10) Message boards : Science (non-SETI) : Is the Universe Infinite? (Message 1563824)
Posted 17 hours ago by Profile Chris SProject donor
Space is very large but it is not infinite.

I think you are wrong, I believe that the universe is actually infinite in spatial extent i.e. it extends forever in any given direction. Of course, if it is truly infinite, then it is also unbounded as in there is no end. So I say it is both.

If you believe in the big bang then you can more easily see that it is not infinite--it may be getting bigger but it is not infinite. We say that it is finite but unbounded.

The outer limits of the "observable universe" to us are limited to the resolution of our telescopes and other detectors. The outer limits are moving away from us at an exponential rate. Therefore while this expansion continues, and we have no reason to think it may not, the potential to be infinite exists.

In the 2 dimensions of a global surface, you can travel in one direction and never reach the end. It is unbounded in the sense that there is no maximum you can travel in any one direction, although you will pass over your starting point over and over again, but that is because the surface area is finite. Then again we have the Mobius strip with two sides but only one surface.

Space is not flat neither is it curved, it is volumetric. Take a sheet of paper and lay it on a table, it is FLAT. Take the same sheet of paper and roll it into a tube, now it is curved. But it is the same piece of paper, it has just changed its orientation.

we may find that a triangle has more or less than 180 degrees which would indicate that space is not flat but rather curved.

We know that now with the Earth, where in spherical geometry the angles of triangles add up to more than π radians, and in hyperbolic geometry the angles of triangles add up to less than π radians. Airlines use that all the time in air travel.
11) Message boards : Science (non-SETI) : Is the World a 2D Hologram? (Message 1563798)
Posted 18 hours ago by Profile Chris SProject donor
Much like characters on a television show would not know that their seemingly 3-D world exists only on a 2-D screen, we could be clueless that our 3-D space is just an illusion. The information about everything in our universe could actually be encoded in tiny packets in two dimensions.

The characters in a TV show were in a real 3D world when it was filmed or broadcast. They knew that, we knew that. However televisions portray that as a 2D picture, although 3D TV is here now with special glasses that gives the "illusion" of 3D.

“We want to find out whether space-time is a quantum system just like matter is,” said Craig Hogan, director of Fermilab’s Center for Particle Astrophysics and the developer of the holographic noise theory. Quantum theory suggests that it is impossible to know both the exact location and the exact speed of subatomic particles. If space comes in 2-D bits with limited information about the precise location of objects, then space itself would fall under the same theory of uncertainty.

Ah there we go that word "Quantum" again. The whole scientific community is obsessed with quantum this and quantum that. Mention the word and people fund you for almost anything it seems.

What is a hologram?

Holography is a technique which enables three-dimensional images (holograms) to be made. The image changes as the position and orientation of the viewing system changes in exactly the same way as if the object were still present, thus making the image appear three-dimensional.

In other words a hologram is artificial 3D.

Therefore the "phrase "Is the World a 2D Hologram?" is a misnomer in terms. It suggests that we are all a figment of our own imagination. You'd think the Fermi people would have better things to do with their time. I'm with Julie, load of old nonsense.
12) Message boards : Cafe SETI : The train thread (Message 1563788)
Posted 18 hours ago by Profile Chris SProject donor
Why is so much freight traveling along the Croydon lines? Where does it come from and go to?
13) Message boards : SETI@home Science : UFO lights over Phoenix Arizona, real or not? (Message 1563743)
Posted 19 hours ago by Profile Chris SProject donor
It's the silly season again :-)
14) Message boards : SETI@home Science : Amazing Discovery new life found. (Message 1563739)
Posted 19 hours ago by Profile Chris SProject donor
Good Grief!!!

All it does is shed new light on where plankton can be found!

Plankton is not life, not as we know it anyway. Show me a piece of seaweed that can do the Times crossword and I might think differently. Just because we haven't found any little green men on Mars, is no reason to hail slime as amazing life.

Annie, lend me that bucket of ice cold water, there are a few that need it chucking over them!
15) Message boards : Cafe SETI : Beer Drinkers thread part 18 (Message 1563705)
Posted 21 hours ago by Profile Chris SProject donor
Very best wishes grant :-)
16) Message boards : Cafe SETI : Missing Persons Bureau (a.k.a. The Mother Hens Thread) (Message 1563624)
Posted 1 day ago by Profile Chris SProject donor
Just had a text from Annie. They are sending her a new Home Hub router. (I always knew that was the problem ....) She was going to kidnap a BT engineer for a ransom but the last one she saw was a bit big, and the only weapon she had to hand was a tin of cat food. So waiting in for this new kit is seriously hampering her hostage taking plans.
17) Message boards : Number crunching : SETI@home project : 1.5 million volunteers ! (Message 1563620)
Posted 1 day ago by Profile Chris SProject donor
I'd certainly be glad if an extra 600,000 hosts became active, though I think it would create alarming side effects in the work delivery system.

Josef is perfectly correct. If the workunits crunched went up by 50%-100% could the current server infrastructure cope? I doubt if it could, but then again it isn't likely to happen.
18) Message boards : Number crunching : Seti in the 21C (Message 1563619)
Posted 1 day ago by Profile Chris SProject donor
Hi Tullio,

Yep, Seti@home has always got mixed up with the Seti Institute. They like us are all aiming for the same thing but in different ways. We here tend to fairly regularly point out that we are not them, but they don't appear to reciprocate. What I do like about them is this

Benefits of membership include: Membership card and SETI Institute lapel pin

But we simply don't have the funds for that, nice as it might be. But they could cost as little as a dollar each Lapel pin badge If we can organise Tee shirts ....
19) Message boards : Number crunching : Seti in the 21C (Message 1563601)
Posted 1 day ago by Profile Chris SProject donor
Actually Juha, something like that was just what I was thinking of! And it is highly notable that Dr A will be their Supervisor, so he is clearly happy to endorse a position of that nature, so credit where it is due. I consider that to be a good step forward, and lets hope Seti@Home benefits much from it. If nothing else, this thread has been useful for bringing that to our attention.

I've always been a great believer in allowing people to carry out their primary role. Let Managers manage, let Engineers engineer, and let Scientists do the science! Supporting roles can be added when there is a clear business case for them, as here.

Julie is partly right in that the future of projects like Seti@Home will greatly benefit from youthful enthusiasm and fresh ideas, but that needs to be tempered by experience and knowledge, and the two necessarily need to be combined. What we don't want is to re-invent the wheel, nor do we want to stifle out of the box thinking.
20) Message boards : Number crunching : Seti in the 21C (Message 1563271)
Posted 1 day ago by Profile Chris SProject donor
+1


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