Top 3 facts that would blow the facebook generation away?

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The discussion centers around intriguing scientific facts that could astonish the younger generation, particularly those familiar with social media like Facebook. Key points include the ability to capture images of atoms, which challenges skepticism about their existence, and the distinction between matter waves and the probability of particle location, which clarifies common misconceptions about quantum mechanics. Special relativity is also highlighted, particularly the phenomenon of length contraction, which explains how particles like muons can travel distances they seemingly shouldn't be able to within their lifetimes. Additionally, the conversation touches on the historical context of life expectancy, food preservation, and hygiene practices, illustrating how modern conveniences contrast sharply with the past. Participants express a mix of amazement at scientific concepts and frustration with the assumption that the younger generation lacks understanding of these topics, advocating for the recognition of their intellectual capabilities.
  • #31


What is required for time travel then?
You enter a black box, wait for time t, and leave the box, the time in the world has advanced by t+x with x>0. Is that time travel?
In science fiction stories, t is something like seconds to hours and x can be several years. With the ISS, t is something like one year and x is some milliseconds.Freezing something does not change time - it slows down chemical processes (but not nuclear decays and other stuff), but not the time itself.
 
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  • #32


mfb said:
What is required for time travel then?
I don't know. As far as I know time travel is just a nonsensical grouping of agile terms.

mfb said:
You enter a black box, wait for time t, and leave the box, the time in the world has advanced by t+x with x>0. Is that time travel?
No.
 
  • #33


Top 3 facts that would blow the facebook generation away?
1. I remember being blown away when I learned that magnetic forces can be explained as a modification of electric forces due to relativistic effects. (See E. Purcell's text on Electricity and Magnetism.)

2. Now I am blown away that a good quantitative theory of magnetism was developed before people knew anything about relativity.

3. Likewise, that thermodynamics was developed before the existence of atoms and molecules was established.
 
  • #34


Top 3 facts that would blow the facebook generation away?
1. Not everything on Wikipedia is true.

2. Before GPS when it was possible to get lost.

3. There was a time before Al Gore when the internet didn't exist.
 
  • #35


Borg said:
1. Not everything on Wikipedia is true.

2. Before GPS when it was possible to get lost.

3. There was a time before Al Gore when the internet didn't exist.

Minor point... It's still possible to get lost with GPS. For instance, my car is thoroughly convinced that I drive through a cornfield on my way to work ("Recalculating... Don't forget the butter..."), but the reality is that I drive over an ex-cornfield that's been turned into a tollway and the maps haven't been updated.
 
  • #36


I think a few people are missing the point of the OPs question. The "Facebook" generation don't have a clue about Einstein, or relativity, or muons... Need simpler facts that they can understand.
 
  • #37


larrybud said:
I think a few people are missing the point of the OPs question. The "Facebook" generation don't have a clue about Einstein, or relativity, or muons... Need simpler facts that they can understand.
I am one of the facebook generation (it became popular in my mid-teens but before that myspace and MSN were ubiquitous) and the suggestion that we need simpler facts or that there are 3 things that would specifically blow us away over any other demographic is both foolish and insulting.
 
  • #39


larrybud said:
I think a few people are missing the point of the OPs question. The "Facebook" generation don't have a clue about Einstein, or relativity, or muons... Need simpler facts that they can understand.
The text of your tweet is too long.
 
  • #40

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