Naked Science Forum
General Science => General Science => Topic started by: neilep on 20/02/2010 00:42:47
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Dearest Peeps Of IQ High & Certificate Ownership,
As a sheepy I of course have a smooth butt with a capital "SMOO"..........
Butt....(see what I did there ?)....butt what is the smoothest surface or thing around today ?
....How smooth is it ?...
......Are there levels of smoothness as there are gradients of hardness ?
Would smoothness be related to slipperiness ?
ewe see..I simply do not know...and I'd like to know so that I will know.
Help me understand the nature of smoothness !
Thanking ewe
hugs & shmishes
mwah mwah mwah !
Neil
Moonlight Becomes Ewe It Goes With Your Hair (http://www.youtube.com/watch?v=dUmkz95E7mw)
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That's disgusting!! Gives a new meaning to butt dialing.
Moonlight Becomes Ewe It Goes With Your Hare - Rabbit stew???
SOOOOOOOO what is the smoothest surface ??????
I doubt it is a butt, but if I remember correctly, I read about a surface that is governed by quantum laws that was invented about 2 years ago. It was made of silicon made in the same but more precise way silicon chips are made, with some added metallic coating.
It really beats (a) butt.
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This is the most disturbing post I have seen..
smoothness relates to porosity?
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Sorry...picture deleted !!
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I heard from a few women that Tiger woods was the smoothest surface on earth :) I guess not so much anymore though
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Examples of smooth surface would include the interface between two liquids. Windows are made by pouring glass over molten metal.
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I thought it was PTFE ?
[???] (http://en.wikipedia.org/wiki/PTFE)
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Is there a standard measure for smoothness?
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The stylus device is called a surfometer. It is often used to determine mean thicknesses of slices. The roughness of the measurement is a measure of the derivative of the thickness profile.
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I am not sure if it applies but pressure relief valve manufacturers test metal sealing surfaces after lapping with a light ban test....they shine light on to the surface and see how much light comes through when placed against a "Perfect" target surface.
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I found it !
The beginning of the article:
Smoothest Surface Ever Created: May Lead To World's First Atomic Microscope
ScienceDaily (Sep. 23, 2008) — A team of physicists from the Autonomous University of Madrid (UAM) and the Madrid Institute of Advanced Studies in Nanoscience (IMDEA-Nanociencia) has created the “quantum stabilized atom mirror,” the smoothest surface ever, according to a recent article in Advanced Materials.
The innovation is already being used in the design of the world's first atomic microscope.
One of the study's authors, Rodolfo Miranda, professor of condensed matter physics at the UAM and director of the IMDEA-Nanociencia, said that the innovation with this almost perfect mirror is the ability to reflect “extraordinarily well” most of the atoms that affect it, through the use of materials of nanometric thickness whose properties are dominated by quantum effects.
The mirror resembles a curved wafer. It is made up of a thin silicon crystal with a thickness of 50 microns, and covered with a very fine layer of lead, 1 or 2 nanometres thick. To study the reflection on this metal, the scientists used helium atoms. Until now mirrors made solely from silicon reflected 1% of helium atoms, but by adding the layer of lead they have managed to achieve a reflection of up to 67%.
The lead is deposited on the silicon at a temperature of between -173º and -133º C which, together with the nanometric thickness of the lead, allows its quantum properties to “come to the surface”, and, in an “astonishing and spontaneous” way, bumps on the surface become evened out and a super flat layer is created. “The extraordinary thing about this process is that when the material is heated to room temperature, it does not distort or break, but instead becomes even flatter, enhancing its reflection properties”, Miranda indicated.
cont. ...
MORE at http://www.sciencedaily.com/releases/2008/09/080922141139.htm