Any question answered...

Heisenberg's uncertainty principle at play, you can't know its position and its movement at the same time.

I can do everything that help page describes with the free version (Win XP). Start a line with the mouse, get it pointed where i want, without any more clicking just type the length and press return.

Or start a line with the mouse and then just type the end coordinates.

Get the main Antivirus/spy/malware firms to recognise it for what it actually is.

Good idea.

Know anyone at Kaspersky, AVG, Symantec?

I wonder if they take submissions for malware?

Yep...
https://submit.symantec.com/websubmit/retail.cgi

I need a band-on downtube cable stopper to be able to use ergopower shifters on a 1970s frameset (no shifter bosses)

does such a thing exist? I've searched but came up with nothing so far

these any good peter? > http://www.sjscycles.co.uk/down-tube-stops-fittings-dept668/

Heisenberg's uncertainty principle at play, you can't know its position and its movement at the same time.

I can do everything that help page describes with the free version (Win XP). Start a line with the mouse, get it pointed where i want, without any more clicking just type the length and press return.

Or start a line with the mouse and then just type the end coordinates.

I worked out how to set the size. Is there no way of changing the size when you've created the object?

I can't find a way to place an object at (x,y,z ft) 1,2,4. It just tells me that I've moved the object 6ft from the position I created the object in. Which could be anywhere.

I'll just stick to Inkscape and my 2D drawings.

Heisenberg's uncertainty principle at play, you can't know its position and its movement at the same time.

What I don't understand is how Dirac's equation makes it possible for matter and antimatter to just pop in and out of existence. Doesn't that contravene some matter conservation 'rules' we are supposed to know about?

Disclaimer: I was going to ask this in the maths thread the other day after watching Everything and Nothing on the turbo. Sub-titles ftw

Use the move tool, start moving it, then enter absolute coordinates in [square,bra,kets]

To accurately move something more complicated than a point, first use the select tool to select all the bits of it, then when you move a point on it, the whole component will move to place the point where you specify.

Entering the brackets and separators is a bit of a pain, but the closing bracket is optional.

What I don't understand is how Dirac's equation makes it possible for matter and antimatter to just pop in and out of existence. Doesn't that contravene some matter conservation 'rules' we are supposed to know about?

Disclaimer: I was going to ask this in the maths thread the other day after watching Everything and Nothing on the turbo. Sub-titles ftw

Matter + Anit-matter = no matter. Haz conservation.

Hmm. I'll give it a chance.

Funny how you approach some software and get on from the word go and learn some extras as you go on but then other stuff is a challenge from the start.

Matter + Anit-matter = no matter. Haz conservation.

That's the theory, but how can both just pop into and out of existence?

euphemism ahoy

In existence (both exist)

Matter + anti-matter = 0

Out of existence (both do not exist)

No matter + no anti-matter = 0

Zero before, zero after, no change in amount, conservation conserved.

(Please remember, I don't know what I am talking about)

I get the cancelling out bit but how does something just pop in to existence? We don't have a finite amount of particles in the universe?

They aren't in the universe.

They're in France, or something.

Matter + Anti-matter = energy. Haz conservation.

FTFY

Someone call the patent office.

Hello, patents office, Einstein speaking.

You discovered what?

Oh no, don't worry, no seriously, don't worry, I'll take care of all the details.

click

In existence (both exist)

Mass:
Matter + anti-matter = 0
Energy:
Matter + anti-matter = 2mc^2

Out of existence (both do not exist)

Mass:
No matter + no anti-matter = 0
Energy:
No matter + no anti-matter = 0mc^2

Zero before, zero after, no change in amount, conservation conserved.

(Please remember, I don't know what I am talking about)

Isn't that (^^) actually the case? Where does this energy come from?

EDIT: Emyr beat me to it.

Explain yourselves!

For any dentisty types on the forum.

I am taking an impression of my teeth, using a home impression kit, which has a two-part putty for mixing together.

I also have a Maryland bridge replacing one incisor.

If I use the putty, what is the risk of pulling the bridge out?

My understanding* comes from the '80s - might be worth waiting for someone more up to date - however:

'Putty' impression materials were (are?) used mainly over a stainless steel frame, acting as a mouldable base for so-called light body impression material. The putty had a high fill loading resulting in a relatively high elastic modulus but low resolution. The light body material had little filler, giving better dimensional resolution but at the expense of elastic modulus / structural strength. The combination allowed a high resolution impression to be made which could be removed once set, deforming to pass over undercut regions in a way that more rigid material would not. It was generally better than medium or heavy body impression materials, which featured in a number of reports of 'accidental extractions'...

If your kit only has putty, it might be ok on it's own, but the dimensional resolution and stability are likely to be limited. I wouldn't risk it.

If the kit includes an armature to increase rigidity, I definitely wouldn't risk it.

The advantage of having someone else take the impression is that they should be liable for making good any damage caused during the process - and any (usually expensive) prosthetic made from the impression should also fit properly when they have finished.

In case of tl:dr, I wouldn't risk it.

• Not a dentist but "The rheology of silicone rubber impression materials" (Journal of Dentistry, 1989; 17: 171-176) is one of mine.
  

reccomendations for a nice multitool a la Leatherman or similar?

my old knock off has had it.

this is tempting, but pricey:

!!!!

http://www.outdoorgb.com/p/wenger_swiss_army_knife_giant_multitool/?utm_source=froogle&utm_medium=directory&utm_content=GBR&currency=GBP&country=GBR&SelectedBundle=148422

Greased everything? BB cups might need the extra tweak.

Remember noises from anywhere on the bike often manifest themselves at the drive. I had one once that turned out to be a cracked seatpost bolt.
Check this thread?

Thanks guys, I'll give the thread a look.

I have a Wave, does everything I need. I think some of their newer ones are a bit lighter though, the wave is pretty chunky.

reccomendations for a nice multitool a la Leatherman or similar?

Leatherman Wave, great all round tools, but I abused mine and the knife is chipped, you do need to keep it cleaned and oiled, still recommended them mind.

Someone recommended me the Victorinox Swisstool Spirit as a replacement as it's identical in cost and apparently better.

does anyone know what time the sorting/delivery office next to euston station is open till?

I know i have a slip at home but i dno wether to rush home to collect..