How Do Pulse Rifles and Pulse Propulsion Function in Sci-Fi?

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Discussion Overview

The discussion revolves around the functioning of pulse rifles and pulse propulsion as depicted in science fiction, exploring the underlying concepts and theories, as well as their feasibility in real-world physics.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant expresses confusion about the operation of pulse rifles, noting their association with plasma and pulse slugs.
  • Another participant suggests that the term "pulse" in science fiction serves a narrative purpose rather than a strict scientific one, indicating that the specifics can vary widely.
  • The same participant explains that real-life pulse lasers require substantial energy, which is impractical for continuous use, leading to the concept of energy being stored and released in pulses.
  • They propose that plasma guns might operate by shooting superheated gas, with the energy needed for firing also delivered in pulses, drawing a parallel to rail guns.
  • Additionally, they mention that all conventional firearms operate in a pulse mode due to the explosive nature of gunpowder, likening them to pulse weapons.
  • Some science fiction weapons are noted to use antigravity effects, emphasizing the creative liberties taken by authors in defining these technologies.
  • A participant acknowledges the variety of interpretations of pulse weapons, indicating a broader understanding of the topic.
  • A link to a resource is shared, which discusses the feasibility of fictional weapons, suggesting a real-world perspective on the concepts discussed.

Areas of Agreement / Disagreement

Participants do not reach a consensus on a specific mechanism for pulse rifles, and multiple interpretations of how these weapons function in fiction remain. The discussion highlights differing views on the plausibility of such technologies.

Contextual Notes

The discussion includes assumptions about energy storage and delivery mechanisms that are not fully explored, and the feasibility of the proposed technologies is not resolved.

Dummienoob
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I've heard about pulse rifles in movies and games, but I haven't been able to understand how they work. I know that they have to do something with plasma, but they shoot pulse slugs too.
Please explain how they work.
 
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The short answer is: they work by the fiction part of "science fiction".
The word "pulse" in front of something makes it sound cool and means whatever the author wants it to.

You'd need to be specific.

IRL: pulse lasers require so much energy that it is not practical to supply it continuously.
So the energy is usually stored from a sane supply rate and delivered in a short burst: a pulse.
Thus, anything that uses energy in pulses would be a pulse-thing.For a plasma gun, they would usually shoot a small squirt of superheated gas by some unexplained mechanism. That's the pulse - though it would be likely that the power needed to shoot would be delivered in a pulse too.

IRL plasma is controlled by electromagnetic fields - so we would think of something like a rail gun but using gas.

All slug throwers are pulse-mode weapons - that's why they go "bang". Contenporary version use gunpowder as the energy store.

By analogy with the lasers and plasma devices, you'd still think in terms of some sort of rail-gun.

However, I've seen SF weapons using antigravity to get these effects.
Like I said - it means whatever the author wants it to.
Does that help?
 
ok thanks. I know now that they can be various weapons bearing the same name.
 

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