Difference between revisions of "Quantum mechanic"

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{{wikipedia|Quantum mechanics}}
 
 
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{{monster
 
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  |attributes={{attributes|A quantum mechanic|humanoid=1|omnivore=1|pois=1|tport=1|hostile=1|infravisible=1}}
|humanoid=1|omnivore=1|pois=1|tport=1|hostile=1|infravisible=1}}
 
 
  |reference=[[monst.c#line1727]]
 
  |reference=[[monst.c#line1727]]
 
}}
 
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The '''quantum mechanic''', {{monsym|quantum mechanic}}, is a [[monster]] in [[Nethack]], and the only member of the {{white|Q}} '''quantum mechanic''' [[monster class]]. It has an attack that causes its target to [[teleport]] when it hits;  the teleport is subject to [[magic cancellation]], permits [[you]] to use [[teleport control]], and will fail on [[non-teleport level]]s.
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A '''quantum mechanic''', {{monsym|quantum mechanic}}, is a type of [[monster]] that appears in ''[[NetHack]]''. It is the sole member of the [[Quantum mechanic (monster class)|quantum mechanic]] [[monster class]]. A quantum mechanic is a [[humanoid]], [[omnivorous]] non-[[Human (monster attribute)|human]] monster that can be seen via [[infravision]], and can [[teleport]] at random; due to being non-human, they respect [[Elbereth]] and eating one as a [[Human (starting race)|human]] character is not [[cannibalism]].
  
{{upcoming|NetHack 3.7.0|[[Genetic engineer]]s will also be {{white|Q}}.}}
+
A quantum mechanic has a single claw attack that causes its target to teleport: the teleport is subject to [[magic cancellation]], and will fail on [[non-teleport level]]s.
  
Quantum mechanics are [[humanoid]] but are not considered [[human (monster attribute)|human]], so they will respect [[Elbereth]], and human player characters will not be penalized for [[cannibalism]] by [[eat]]ing a quantum mechanic [[corpse]]. They are [[poisonous]] to eat, however, and doing so will toggle intrinsic [[speed]] - granting it if you do not have it, and removing it if you already possess it.
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Quantum mechanic [[corpse]]s are [[poisonous]] to eat, and eating a quantum mechanic corpse or [[tin]] will toggle intrinsic [[speed]] - this will grant the intrinsic if you do not have it, and remove the intrinsic if you already possess it.
 +
 
 +
{{upcoming|NetHack 3.7.0|[[Genetic engineer]]s are introduced as part of the monster class.}}
  
 
==Generation==
 
==Generation==
===Schroedinger's Cat===
+
Randomly-generated quantum mechanics are always generated hostile.
{{wikipedia|Schrödinger's cat}}
+
 
There is a 5% chance that a quantum mechanic carries a [[large box]]{{refsrc|makemon.c|737|version=NetHack 3.6.1}}. Upon opening the box, with a 50% chance a [[peaceful]] [[housecat]] [[call|named]] "[[Schroedinger's Cat]]" is generated; if generation or 50% chance fails, the box will contain a cat corpse named "Schroedinger's Cat". The state of the cat is not determined until the box is opened; in fact, the [[large box]] is effectively empty until opened. The housecat has no special properties, and is simply based on a well-known thought experiment in quantum physics. See the article for more specific information.
+
A quantum mechanic has a {{frac|20}} chance of [[Monster starting inventory|being generated with]] a [[large box]].{{refsrc|src/makemon.c|744|version=NetHack 3.6.7|comment=this applies to the entire monster class, but the quantum mechanic is currently the sole monster}} The large box has a {{frac|2}} chance of generating a peaceful [[housecat]] [[name]]d [[Schroedinger's Cat]] if there is room to place it, and will otherwise contain a housecat corpse named "Schroedinger's Cat". The state of the cat within the box is not determined until the box is opened - see the article for more specific information.
  
 
==Strategy==
 
==Strategy==
Quantum mechanics do not hit particularly hard themselves, but the teleportation will cause you no end of annoyance outside areas like [[Sokoban]]. It can also place you in a much more disadvantageous position than you were previously, e.g. by teleporting you away from the stairs in large open areas, separating you from your [[pet]]s, or else placing you next to a particularly nasty monster. If teleported out of a [[shop]], the [[shopkeeper]] will be angered if you have any unpaid items on hand; be sure to establish credit beforehand if possible. As a pet, the quantum mechanic has some relative use since it can teleport away many other monsters, but can also teleport shopkeepers out of their shops if their level is high enough, which angers them.  
+
Quantum mechanics do not hit particularly hard, but being teleported will cause you no end of annoyance: It can place you in a more disadvantageous position than you were previously, e.g. by teleporting you away from the stairs in large open areas, separating you from your [[pet]]s, or else placing you next to a particularly nasty monster. If teleported out of a [[shop]], the [[shopkeeper]] will be angered if you have any unpaid items on hand; be sure to establish credit beforehand if possible. If you are teleported by a quantum mechanic and have [[teleport control]], you can control the destination as normal.
  
Eating a quantum mechanic corpse is a useful way to gain the speed intrinsic, but should be avoided while you have it; you can [[tinning kit|tin]] them to reapply the intrinsic speed if it is lost, e.g. from the attacks of a [[cockatrice]], [[green slime]], or [[shade]]. While the same can be done with a [[wand of speed monster]], this allows you to save more of its charges for pets, especially after [[Orcus-town]]; use a [[stethoscope]] to keep track of your own speed.
+
As a pet, the quantum mechanic has some relative use since its attack can teleport away most other monsters - there is a small chance that a pet mechanic of high enough level can attack a shopkeeper of a low enough level and teleport them out of their shop, angering them.
 +
 
 +
Quantum mechanic corpses are a useful source of speed for characters who do not yet have it - a tinned corpse is ideal if they cannot safely eat poisonous corpses. Tins of quantum mechanic are also very useful in the long term to regain lost intrinsic speed, e.g. from the attacks of a [[cockatrice]] or [[shade]] - while the same can be done with a [[wand of speed monster]], making tins via [[tinning kit]] allows you to save their charges for pets, especially after [[Orcus-town]]. Use a [[stethoscope]] to keep track of your pets' speed and your own.
 +
 
 +
{{upcoming|3.7.0|The [[potion of speed]] now confers intrinsic speed to characters instead of the wand, though the latter method still works for other monsters.}}
 +
 
 +
==History==
 +
The quantum mechanic first appears in [[NetHack 1.3d]]. From this version to [[NetHack 2.3e]], eating a quantum mechanic corpse confers [[teleportitis]].
 +
 
 +
In Nethack 2.3e, quantum mechanics appear if the KAA [[compile-time option]] is defined, and are otherwise replaced by the quasit. Both monsters are included in the default bestiary for [[NetHack 3.0.0]].
  
 
==Origin==
 
==Origin==
The monster's name is a [[pun]] on "Quantum Mechanics", a branch of physics. The messages that accompany the monster's teleporting attack and the toggling of intrinsic speed are jokes based on the Heisenberg [[wikipedia:uncertainty principle|uncertainty principle]], which states that measuring the position of a particle makes its velocity more uncertain, and vice versa. Toggling the speed intrinsic could also be a reference to the transitions that occur between discrete [[wikipedia:energy level|energy levels]] in quantum mechanics.
+
{{wikipedia|Quantum mechanics}}
 +
{{wikipedia|Schrödinger's cat}}
 +
The quantum mechanic is a [[pun]] on the branch of physics known as "[[Wikipedia:Quantum mechanics|quantum mechanics]]". The messages that accompany the monster's teleporting attack and the toggling of intrinsic speed are jokes based on the Heisenberg [[wikipedia:uncertainty principle|uncertainty principle]], which states that measuring the position of a particle makes its velocity more uncertain, and vice versa - some variants add [[YAFM]] that relates to this principle. Toggling the speed intrinsic could also be a reference to the transitions that occur between discrete [[wikipedia:energy level|energy levels]] in quantum mechanics.
  
'''[[wikipedia:Schrödinger's cat|Schrödinger's cat]]''' is a famous thought experiment in quantum mechanics involving imagining locking a cat in a box with a mechanism that has a 50% chance of killing the cat, depending upon the final state of a quantum system. The orthodox [[wikipedia:Copenhagen interpretation|Copenhagen interpretation]] of quantum mechanics asserts that the cat in the box is in a superposition of possible outcomes; in half of them the cat is dead, and in the other half it is alive. Only when the box is opened and "observed" is the quantum wavefunction collapsed and the fate of the cat determined; Schrödinger asserted that this was absurd, and thus so was the Copenhagen interpretation. Modern physicists are still divided on its validity.
+
"Schrödinger's cat" is a famous thought experiment in quantum mechanics involving imagining locking a cat in a box with a mechanism that has a nonzero chance of killing the cat, depending upon the final state of a quantum system; in the original thought experiment, this is a device designed to break a vial of poison if it detects the radiation emitted by a decaying atom. The orthodox [[wikipedia:Copenhagen interpretation|Copenhagen interpretation]] of quantum mechanics asserts that the cat in the box is in a superposition of possible outcomes: in half of them the cat is dead, and in the other half it is alive. Only when the box is opened and "observed" is the quantum wavefunction collapsed and the fate of the cat determined - Schrödinger asserted that this was absurd, and thus so was the Copenhagen interpretation. Real-life examples of "[[wikipedia:Cat state|cat states]]" have been experimentally demonstrated for systems larger than the subatomic scales at which quantum mechanics apply, but nowhere near the macroscopic scale of an animal; whether they can exist at such a scale is still a matter of debate among physicists.
  
 
==Messages==
 
==Messages==
{{message|Your position suddenly seems very uncertain!|A quantum mechanic hit you and you attempted to teleport.}}
+
{{message|Your position suddenly seems very uncertain!|A quantum mechanic's attack caused you to teleport.}}
{{message|Having determined the quantum mechanic's speed, you are unable to know its location.|You applied a stethoscope to a quantum mechanic and received a message of its status.}}
+
{{message|Your velocity suddenly seems very uncertain!|You ate a quantum mechanic corpse and your intrinsic speed was toggled.}}
{{message|Your velocity suddenly seems very uncertain!|You ate a quantum mechanic corpse and your intrinsic speed is about to be toggled.}}
 
 
{{message|You seem slower.|Your intrinsic speed was toggled off.}}
 
{{message|You seem slower.|Your intrinsic speed was toggled off.}}
 
{{message|You seem faster.|Your intrinsic speed was toggled on.}}
 
{{message|You seem faster.|Your intrinsic speed was toggled on.}}
  
== Encyclopedia entry ==
+
==Variants==
 +
Some variants move the quantum mechanic to a different glyph, while others may grant them additional qualities based on quantum mechanics.
 +
 
 +
===SLASH'EM===
 +
In [[SLASH'EM]], quantum mechanics [[Hits creatures as +x weapon|hit as a +1 weapon]]. This also applies to [[SlashTHEM]].
 +
 
 +
===UnNetHack===
 +
In [[UnNetHack]], [[apply]]ing a [[stethoscope]] to a quantum mechanic will cause them to teleport and print a message - this is a reference to the Heisenberg uncertainty principle as described above. This can be used to get an unwanted quantum mechanic out of your hair in a pinch.
 +
 
 +
====Message====
 +
{{message|Having determined the quantum mechanic's speed, you are unable to know its location.|You applied a stethoscope to a quantum mechanic and received a message of its status, causing it to teleport.}}
 +
 
 +
===xNetHack===
 +
In [[xNetHack]], the quantum mechanic is moved to the [[aberration]] monster class as {{cyan|U}}. Viewing a quantum mechanic via [[far look]] will give the quantum mechanic the name of a random real-life physicist (e.g., "quantum mechanic - Dr. Curie"), similar to a [[coyote]] - a [[cancelled]] quantum mechanic will have the last name on the list by default, which is "Dr. Science".
 +
 
 +
===Hack'EM===
 +
In [[Hack'EM]], applying a stethoscope to a quantum mechanic will teleport them as in UnNetHack.
  
 +
==Encyclopedia entry==
 
{{encyclopedia|
 
{{encyclopedia|
These creatures are not native to this universe; they seem
+
These creatures are not native to this universe; they seem to have strangely derived powers, and unknown motives.
to have strangely derived powers, and unknown motives.
 
 
 
  
_Uncertainty Principle_ The principle that it is not possible
+
_Uncertainty Principle_ The principle that it is not possible to know with unlimited accuracy both the position and momentum of a particle. ... An explanation of the uncertainty is that in order to locate a particle exactly, an observer must be able to bounce off it a photon of radiation; this act of location itself alters the position of the particle in an unpredictable way. To locate the position accurately, photons of short wavelength would have to be used. The high momentum of such photons would cause a large effect on the position. On the other hand, using photons of lower momenta would have less effect on the particle's position, but would be less accurate because of the lower wavelength.
to know with unlimited accuracy both the position and momentum
+
[ A Concise Dictionary of Physics ]
of a particle. ... An explanation of the uncertainty is that
 
in order to locate a particle exactly, an observer must be
 
able to bounce off it a photon of radiation; this act of
 
location itself alters the position of the particle
 
in an unpredictable way. To locate the position accurately,
 
photons of short wavelength would have to be used. The high
 
momentum of such photons would cause a large effect on the
 
position. On the other hand, using photons of lower momenta
 
would have less effect on the particle's position, but would
 
be less accurate because of the lower wavelength.
 
[ A Concise Dictionary of Physics ]
 
 
}}
 
}}
  
== References ==
+
==References==
 
<references/>
 
<references/>
 
+
{{nethack-367}}
{{nethack-364}}
 
 
[[Category:Monsters]]
 
[[Category:Monsters]]
[[Category:Monster classes]]
 

Latest revision as of 01:25, 11 February 2024

A quantum mechanic, Q, is a type of monster that appears in NetHack. It is the sole member of the quantum mechanic monster class. A quantum mechanic is a humanoid, omnivorous non-human monster that can be seen via infravision, and can teleport at random; due to being non-human, they respect Elbereth and eating one as a human character is not cannibalism.

A quantum mechanic has a single claw attack that causes its target to teleport: the teleport is subject to magic cancellation, and will fail on non-teleport levels.

Quantum mechanic corpses are poisonous to eat, and eating a quantum mechanic corpse or tin will toggle intrinsic speed - this will grant the intrinsic if you do not have it, and remove the intrinsic if you already possess it.

The following information pertains to an upcoming version (NetHack 3.7.0). If this version is now released, please verify that it is still accurate, then update the page to incorporate this information.

Genetic engineers are introduced as part of the monster class.

Generation

Randomly-generated quantum mechanics are always generated hostile.

A quantum mechanic has a 120 chance of being generated with a large box.[1] The large box has a 12 chance of generating a peaceful housecat named Schroedinger's Cat if there is room to place it, and will otherwise contain a housecat corpse named "Schroedinger's Cat". The state of the cat within the box is not determined until the box is opened - see the article for more specific information.

Strategy

Quantum mechanics do not hit particularly hard, but being teleported will cause you no end of annoyance: It can place you in a more disadvantageous position than you were previously, e.g. by teleporting you away from the stairs in large open areas, separating you from your pets, or else placing you next to a particularly nasty monster. If teleported out of a shop, the shopkeeper will be angered if you have any unpaid items on hand; be sure to establish credit beforehand if possible. If you are teleported by a quantum mechanic and have teleport control, you can control the destination as normal.

As a pet, the quantum mechanic has some relative use since its attack can teleport away most other monsters - there is a small chance that a pet mechanic of high enough level can attack a shopkeeper of a low enough level and teleport them out of their shop, angering them.

Quantum mechanic corpses are a useful source of speed for characters who do not yet have it - a tinned corpse is ideal if they cannot safely eat poisonous corpses. Tins of quantum mechanic are also very useful in the long term to regain lost intrinsic speed, e.g. from the attacks of a cockatrice or shade - while the same can be done with a wand of speed monster, making tins via tinning kit allows you to save their charges for pets, especially after Orcus-town. Use a stethoscope to keep track of your pets' speed and your own.

The following information pertains to an upcoming version (3.7.0). If this version is now released, please verify that it is still accurate, then update the page to incorporate this information.

The potion of speed now confers intrinsic speed to characters instead of the wand, though the latter method still works for other monsters.

History

The quantum mechanic first appears in NetHack 1.3d. From this version to NetHack 2.3e, eating a quantum mechanic corpse confers teleportitis.

In Nethack 2.3e, quantum mechanics appear if the KAA compile-time option is defined, and are otherwise replaced by the quasit. Both monsters are included in the default bestiary for NetHack 3.0.0.

Origin

The quantum mechanic is a pun on the branch of physics known as "quantum mechanics". The messages that accompany the monster's teleporting attack and the toggling of intrinsic speed are jokes based on the Heisenberg uncertainty principle, which states that measuring the position of a particle makes its velocity more uncertain, and vice versa - some variants add YAFM that relates to this principle. Toggling the speed intrinsic could also be a reference to the transitions that occur between discrete energy levels in quantum mechanics.

"Schrödinger's cat" is a famous thought experiment in quantum mechanics involving imagining locking a cat in a box with a mechanism that has a nonzero chance of killing the cat, depending upon the final state of a quantum system; in the original thought experiment, this is a device designed to break a vial of poison if it detects the radiation emitted by a decaying atom. The orthodox Copenhagen interpretation of quantum mechanics asserts that the cat in the box is in a superposition of possible outcomes: in half of them the cat is dead, and in the other half it is alive. Only when the box is opened and "observed" is the quantum wavefunction collapsed and the fate of the cat determined - Schrödinger asserted that this was absurd, and thus so was the Copenhagen interpretation. Real-life examples of "cat states" have been experimentally demonstrated for systems larger than the subatomic scales at which quantum mechanics apply, but nowhere near the macroscopic scale of an animal; whether they can exist at such a scale is still a matter of debate among physicists.

Messages

Your position suddenly seems very uncertain!
A quantum mechanic's attack caused you to teleport.
Your velocity suddenly seems very uncertain!
You ate a quantum mechanic corpse and your intrinsic speed was toggled.
You seem slower.
Your intrinsic speed was toggled off.
You seem faster.
Your intrinsic speed was toggled on.

Variants

Some variants move the quantum mechanic to a different glyph, while others may grant them additional qualities based on quantum mechanics.

SLASH'EM

In SLASH'EM, quantum mechanics hit as a +1 weapon. This also applies to SlashTHEM.

UnNetHack

In UnNetHack, applying a stethoscope to a quantum mechanic will cause them to teleport and print a message - this is a reference to the Heisenberg uncertainty principle as described above. This can be used to get an unwanted quantum mechanic out of your hair in a pinch.

Message

Having determined the quantum mechanic's speed, you are unable to know its location.
You applied a stethoscope to a quantum mechanic and received a message of its status, causing it to teleport.

xNetHack

In xNetHack, the quantum mechanic is moved to the aberration monster class as U. Viewing a quantum mechanic via far look will give the quantum mechanic the name of a random real-life physicist (e.g., "quantum mechanic - Dr. Curie"), similar to a coyote - a cancelled quantum mechanic will have the last name on the list by default, which is "Dr. Science".

Hack'EM

In Hack'EM, applying a stethoscope to a quantum mechanic will teleport them as in UnNetHack.

Encyclopedia entry

These creatures are not native to this universe; they seem to have strangely derived powers, and unknown motives.

 _Uncertainty Principle_ The principle that it is not possible to know with unlimited accuracy both the position and momentum of a particle. ... An explanation of the uncertainty is that in order to locate a particle exactly, an observer must be able to bounce off it a photon of radiation; this act of location itself alters the position of the particle in an unpredictable way. To locate the position accurately, photons of short wavelength would have to be used. The high momentum of such photons would cause a large effect on the position. On the other hand, using photons of lower momenta would have less effect on the particle's position, but would be less accurate because of the lower wavelength.
  [ A Concise Dictionary of Physics ]

References

  1. src/makemon.c in NetHack 3.6.7, line 744: this applies to the entire monster class, but the quantum mechanic is currently the sole monster