What if a modern physics textbook found itself back in time

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Discussion Overview

The discussion explores the hypothetical scenario of a modern physics textbook being transported back to the year 1720. Participants consider the implications of introducing advanced scientific knowledge, including mechanics, relativity, optics, and electromagnetism, to a historical context lacking the necessary technology and foundational understanding. The conversation includes various perspectives on how this could affect scientific development and understanding in the past.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants suggest that while a modern textbook could provide valuable insights, the lack of contemporary technology would hinder the ability to test and verify many theories presented within it.
  • Others argue that the textbook's context assumes a level of prior knowledge and technology that would not be available in the 18th century, leaving many concepts unexplained.
  • One participant notes that while calculus existed in 1720, advanced formulations like Lagrange and Hamilton were not yet developed, which could lead to an appreciation for the mathematical advancements presented in the book.
  • Another viewpoint emphasizes that knowledge of principles such as the ideal gas law and Maxwell's equations could accelerate technological advancements, particularly in steam engine development and electromagnetism.
  • There is speculation about the potential impact of introducing concepts like superluminal travel or antimatter energy sources, even if the means to realize them were not available at the time.

Areas of Agreement / Disagreement

Participants express a mix of agreement and disagreement regarding the potential impact of the textbook. While some acknowledge the value of the knowledge it contains, others highlight significant limitations due to the historical context and technological constraints of the time. The discussion remains unresolved on the overall implications of such an event.

Contextual Notes

Limitations include the dependence on historical technological capabilities, the assumptions made about prior knowledge, and the unresolved nature of how specific theories could be understood or applied without the necessary tools or foundational concepts.

Quantumfied
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Okay guys, I’ve been wondering how different would the world be if something as simple as my calculus based physics textbook found itself back in time around 300 years ago. For the sake of the argument assume some rift opened up and swallowed my book sending it back to the year 1720. Let’s assume there is no paradox due to time travel. My textbook is approximately 1000 pages covering topics from mechanics, relativity, optics, electromagnetism, nuclear physics, and circuits. Assuming the book found itself on the desk of a world class scientist of the time that didn’t conceal the knowledge from his fellow scientists, engineers, and other scholars.

With that said how different would the world now be if just a single textbook that I described found it’s way in the past?
 
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Quantumfied said:
Okay guys, I’ve been wondering how different would the world be if something as simple as my calculus based physics textbook found itself back in time around 300 years ago. For the sake of the argument assume some rift opened up and swallowed my book sending it back to the year 1720. Let’s assume there is no paradox due to time travel. My textbook is approximately 1000 pages covering topics from mechanics, relativity, optics, electromagnetism, nuclear physics, and circuits. Assuming the book found itself on the desk of a world class scientist of the time that didn’t conceal the knowledge from his fellow scientists, engineers, and other scholars.

With that said how different would the world now be if just a single textbook that I described found it’s way in the past?
Sounds like a plot to a sci-fi film.
It would be difficult to test and verify some of those theories using 18th century technology – how would they test / experiment for all the subatomic particles? Relativity? They had no particle accelerators or atomic clocks. Fibre optics, Deep space telescopes or spectrophotometers.
I think you would have to send an engineering/Chemistry book and materials science book back too. Probably some maths/ statistical analysis.
Imagine getting a book from 300 years into the future? Complete quantum gravity equations? Dark matter particle demonstrated? Dark Energy? Just after they falsified string theory? All you need is that lithium crystal particle accelerator around the solar system they built just after the megasuperlargedark matter particle collider was decommissioned in 2272.
 
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There would be some uses but a textbook written in 2018 assumes a context that would not be true (for the most part) in previous centuries. When it mentions specific equipment it doesn't include details on how all these machines work and, more importantly, the manufacturing processes on how to build it (nor the plethora of industry and science needed for all of that). Plenty of things will be left unexplained because it can be reasonably assumed that a student in a 2018 classroom will know what these terms mean, e.g. references to computer modelling.
 
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<edit: remove junk post in quotes>

OP here and Idk how your post got deleted but after reading it, it has nothing to do with what I posted and I agree that it should have been deleted. Btw this post is allowed on this forum as it was posted in the sci-fi section.
 
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1720 they had calculus but not the Lagrange- or Hamilton formalism (Lagrange was born 1736, Hamilton 1805). They might appreciate that. It would also give the book some credibility for parts that are harder to verify.

A primitive steam engine was invented around that time, a more powerful one was built by Watt in 1781. The ideal gas law is from 1834, combining a few special cases to a single law - knowing it earlier should help with the steam engines.

The Maxwell equations should help soon. The first proper electric motor was built in 1821 but with the theory behind it I would expect more serious development earlier. Knowing that all this stuff can have applications helps a lot.

Perhaps the most valuable lesson from the book would be how much there is to learn. Imagine we get a book today that describes some sort of superluminal travel, a way to convert matter to antimatter (->energy source via annihilation) and has an astronomy section where results from a 1 million kilometer telescope are discussed. We don't understand most of the descriptions and we cannot build any of the necessary tools - but it tells us we can work towards that goal.
 
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