Practically perfect vacuum - Revision history

Apm: Category:Far term target

2026-03-29T19:10:09Z

← Older revision		Revision as of 21:10, 29 March 2026
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	How much decoherence is there by interaction with walls at room temperature?		How much decoherence is there by interaction with walls at room temperature?

			[[Category:Far term target]]

Apm: /* Chicken egg problem */ added linebreak

2021-03-26T15:49:56Z

Chicken egg problem: added linebreak

← Older revision		Revision as of 17:49, 26 March 2021
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	That leaves the problem of cyclic dependency:		That leaves the problem of cyclic dependency:
	[[~~gem~~-gum technology]]
			[[Gem-gum technology]]:
	* is capable of creating PPV but it also		* is capable of creating PPV but it also
	* needs PPV to in its [[nanofactory]] manufacturing devices		* needs PPV to in its [[nanofactory]] manufacturing devices

Apm: /* Currently impossible because ... */ elaborated a bit

2021-03-26T15:49:03Z

Currently impossible because ...: elaborated a bit

← Older revision		Revision as of 17:49, 26 March 2021
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	* gasses (like water vapour) adsorb onto surfaces when vented (and spoil the vacuum later)		* gasses (like water vapour) adsorb onto surfaces when vented (and spoil the vacuum later)
	* gasses diffuse into material (especially at grain boundaries)		* gasses diffuse into material (especially at grain boundaries)
	* large vessel sizes		* only large vessel sizes are possible

	== Becoming possible because ... ==		== Becoming possible because ... ==

Apm: /* Related */ added link to page: Clean room lockout

2021-03-26T15:48:18Z

Related: added link to page: Clean room lockout

← Older revision		Revision as of 17:48, 26 March 2021
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	* [[Vacuum handling]]		* [[Vacuum handling]]
			* [[Clean room lockout]]

	== Interesting off-topic question ==		== Interesting off-topic question ==

Apm: Apm moved page Practically prefect vacuum to Practically perfect vacuum without leaving a redirect: correcting typo: prefect -> perfect

2021-03-26T15:46:41Z

Apm moved page Practically prefect vacuum to Practically perfect vacuum without leaving a redirect: correcting typo: prefect -> perfect

← Older revision	Revision as of 17:46, 26 March 2021
(No difference)

Apm: Basic version of the page

2021-03-26T15:45:06Z

Basic version of the page

New page

A practically perfect vacuum (PPV) is needed by [[gem-gum technology]]
since the the force applying [[mechanosynthesis]] that is synthesizing the [[crystolecules]]
that form the basis of [[gem-gum technology]] needs it.

== Currently impossible because ... ==

With current day technology (2021) it is not at all possible to reach a prefect vacuum.
Limiting factors are:
* gasses (like water vapour) adsorb onto surfaces when vented (and spoil the vacuum later)
* gasses diffuse into material (especially at grain boundaries)
* large vessel sizes

== Becoming possible because ... ==

In [[gem-gum technology]] all these limitations are lifted.
* very small vessel sized are possible (statistically ore likely that there is not a single atom in one vessel)
* flawless single crystal walls in those nanoscale chambers have no grain boundaries
* hydrogen passivated diamond chamber walls do not adsorb gasses well
Additionally strong open radical bond free gas molecule getter surfaces can be integrated.

{{wikitodo|add a sketch about how small vessel size makes PPV in a vessel more likely}}

== Chicken egg problem ==

That leaves the problem of cyclic dependency:
[[gem-gum technology]]
* is capable of creating PPV but it also
* needs PPV to in its [[nanofactory]] manufacturing devices
Related: [[bootstrapping]]

== Related ==

* [[Vacuum handling]]

== Interesting off-topic question ==

Can a part of the probability density of a
fullyquantum mechanically delocalized gas molecule
be transported away by atomically tight positive displacement mechanisms?

How much decoherence is there by interaction with walls at room temperature?