How did Henrich Hertz measure UHF waves?

Click For Summary

Discussion Overview

The discussion revolves around the historical methods used by Heinrich Hertz to measure ultra-high frequency (UHF) waves, particularly in the context of verifying Maxwell's theory. Participants express curiosity about the technological capabilities of Hertz's time and how measurements of such high frequencies were achieved without modern instruments.

Discussion Character

  • Exploratory, Historical, Conceptual clarification

Main Points Raised

  • One participant expresses confusion about how measurements of high frequencies were possible in Hertz's time, suggesting that the instruments were likely more mechanical.
  • Another participant questions how concepts of frequencies in the millions of hertz could be understood and measured, noting the lack of modern visualization tools like oscilloscopes.
  • A different viewpoint suggests that if standing waves could be established and wavelengths measured, it might be feasible to derive frequency from known values, implying a connection between wavelength, speed of light, and frequency.
  • A participant shares a link to a resource detailing Hertz's experiments, indicating a specific experiment that may have been used for these measurements.

Areas of Agreement / Disagreement

Participants generally share a sense of curiosity and confusion regarding the measurement techniques of Hertz's era, but there is no consensus on the specifics of how these measurements were made or the implications of their findings.

Contextual Notes

Participants acknowledge limitations in their understanding of the historical context and the technological constraints of Hertz's time, as well as the assumptions underlying their questions about frequency measurement.

Who May Find This Useful

Readers interested in the history of physics, the development of electromagnetic theory, and the evolution of measurement techniques in experimental physics may find this discussion relevant.

DragonPetter
Messages
831
Reaction score
1
I've been reading about the history of the verification of maxwell's theory, and I'm a bit confused how people in those times could measure such high frequencies. I imagined they used instruments that were much more mechanical, and so I'm not sure how they could know or measure things that happen millions of times a second.
 
Engineering news on Phys.org
Does anyone know anything about this? I downloaded his original book "Electric Waves" by Heinrich Hertz, but I haven't had time to go through it yet.

I just am curious how they could have concepts of millions of times a second or even thousands of times a second, when nothing in their world would be obvious that things happen that fast except qualitatively, and I know they did not have printers or oscilliscope screens to show graphs of things happening so fast.
 
I just have thought that if they can have a standing wave, or somehow measure the wavelength, and they have been able to approximate the speed of light, then it works out to having a very high frequency. Was it this simple that they measured wavelengths in meters and then combined that with their knowledge of general waves and the first experiments on the speed of light?
 
http://people.seas.harvard.edu/~jones/cscie129/nu_lectures/lecture6/hertz/Hertz_exp.html

I think this is the experiment he used.
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 3 ·
Replies
3
Views
18K
  • · Replies 36 ·
2
Replies
36
Views
9K
Replies
20
Views
3K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 47 ·
2
Replies
47
Views
5K
Replies
14
Views
2K
  • · Replies 5 ·
Replies
5
Views
3K