Arsthbt

How to add double frame in tcolorbox?

Finding angle with pure Geometry.

What are these boxed doors outside store fronts in New York?

To string or not to string

Schoenfled Residua test shows proportionality hazard assumptions holds but Kaplan-Meier plots intersect

How do we improve the relationship with a client software team that performs poorly and is becoming less collaborative?

Can an x86 CPU running in real mode be considered to be basically an 8086 CPU?

Accidentally leaked the solution to an assignment, what to do now? (I'm the prof)

Can a Warlock become Neutral Good?

How can bays and straits be determined in a procedurally generated map?

Fully-Firstable Anagram Sets

Font hinting is lost in Chrome-like browsers (for some languages )

How did the USSR manage to innovate in an environment characterized by government censorship and high bureaucracy?

Either or Neither in sentence with another negative

How much RAM could one put in a typical 80386 setup?

"You are your self first supporter", a more proper way to say it

How does strength of boric acid solution increase in presence of salicylic acid?

Can divisibility rules for digits be generalized to sum of digits

What is the offset in a seaplane's hull?

tikz: show 0 at the axis origin

How to find program name(s) of an installed package?

Email Account under attack (really) - anything I can do?

Replacing matching entries in one column of a file by another column from a different file

How is it possible to have an ability score that is less than 3?

Equivalence principle before Einstein

Why equivalence principle is principle and not law?Why do objects with different masses fall at the same rate?Equivalence principle questionHow (or why) equivalence principle led to Einstein field equations?Where is Strong Equivalence Principle stronger than Weak Equivalence Principle?How does one refute a Machian mechanism for inertial emergence?Einstein equivalence principle cannot entirely predict gravitational time dilationRotating Particle - Violation of Einstein Equivalence PrincipleEquivalence PrincipleElectron and gravity- equivalence principle

3

$begingroup$

In an german interview some physicist were asked, what they would ask Einstein, if he was alive today. One of them wanted to know how Einstein came up with the idea of the equivalence principle, that inertial mass is the same as gravitational mass. Correct me if I'm wrong, but I always believed that was known way before Einstein. And I have an experiment in mind where one famous guy standing on a church and letting two things fall with different mass to test if gravity acts on every object the same.

My question is, does somebody know the name of this famous person, who conducted the experiment? I can't remember it.

mass history equivalence-principle

share|cite|improve this question

edited 3 hours ago

Qmechanic♦

107k121991239

asked 3 hours ago

MaximMaxim

1375

$endgroup$

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  $begingroup$
  Galileo Galilei, see en.wikipedia.org/wiki/Galileo_Galilei
  $endgroup$
  – hyportnex
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  "And I have an experiment in mind where one famous guy standing on a church and letting two things fall with different mass to test if gravity acts on every object the same." I think you mean Galileo Galilei.
  $endgroup$
  – Gert
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  $begingroup$
  I'm voting to close this question as off-topic because it's about the history of physics, not physics primarily.
  $endgroup$
  – Gert
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  This looks like it could be a better fit on SE.HistoryOfScienceAndMathematics.
  $endgroup$
  – Nat
  3 hours ago
  

  
  
  
  

add a comment | 

3

$begingroup$

In an german interview some physicist were asked, what they would ask Einstein, if he was alive today. One of them wanted to know how Einstein came up with the idea of the equivalence principle, that inertial mass is the same as gravitational mass. Correct me if I'm wrong, but I always believed that was known way before Einstein. And I have an experiment in mind where one famous guy standing on a church and letting two things fall with different mass to test if gravity acts on every object the same.

My question is, does somebody know the name of this famous person, who conducted the experiment? I can't remember it.

mass history equivalence-principle

share|cite|improve this question

edited 3 hours ago

Qmechanic♦

107k121991239

asked 3 hours ago

MaximMaxim

1375

$endgroup$

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  $begingroup$
  Galileo Galilei, see en.wikipedia.org/wiki/Galileo_Galilei
  $endgroup$
  – hyportnex
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  "And I have an experiment in mind where one famous guy standing on a church and letting two things fall with different mass to test if gravity acts on every object the same." I think you mean Galileo Galilei.
  $endgroup$
  – Gert
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  $begingroup$
  I'm voting to close this question as off-topic because it's about the history of physics, not physics primarily.
  $endgroup$
  – Gert
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  This looks like it could be a better fit on SE.HistoryOfScienceAndMathematics.
  $endgroup$
  – Nat
  3 hours ago
  

  
  
  
  

add a comment | 

$begingroup$

In an german interview some physicist were asked, what they would ask Einstein, if he was alive today. One of them wanted to know how Einstein came up with the idea of the equivalence principle, that inertial mass is the same as gravitational mass. Correct me if I'm wrong, but I always believed that was known way before Einstein. And I have an experiment in mind where one famous guy standing on a church and letting two things fall with different mass to test if gravity acts on every object the same.

My question is, does somebody know the name of this famous person, who conducted the experiment? I can't remember it.

mass history equivalence-principle

share|cite|improve this question

edited 3 hours ago

Qmechanic♦

107k121991239

asked 3 hours ago

MaximMaxim

1375

$endgroup$

share|cite|improve this question

edited 3 hours ago

Qmechanic♦

107k121991239

asked 3 hours ago

MaximMaxim

1375

share|cite|improve this question

edited 3 hours ago

Qmechanic♦

107k121991239

asked 3 hours ago

MaximMaxim

1375

edited 3 hours ago

Qmechanic♦

107k121991239

edited 3 hours ago

Qmechanic♦

107k121991239

asked 3 hours ago

MaximMaxim

1375

asked 3 hours ago

MaximMaxim

1375

1 Answer
1

active

oldest

votes

5

$begingroup$

There are lots of different ways of stating the equivalence principle, and they're not all logically ... er ... equivalent to each other.

Names that come up in this connection, from before Einstein, are Galileo and Eotvos. Experiments that test the equality of gravitational and inertial mass are called Eotvos experiments.

Einstein's version of the equivalence principle is more radical than anything that Galileo or Newton envisioned. It entails throwing away the whole concept of a universal reference frame and instead defining inertial frames as local, free-falling frames. Previously, people had imagined that there was a frame of the "fixed stars," which was as good an approximation to an inertial frame as we would ever need. But according to relativity, observers in New York and Beijing can't even have the same frame of reference.

Taking the equivalence principle seriously also leads to the prediction of gravitational time dilation, which is something that nobody before Einstein had imagined.

share|cite|improve this answer

answered 3 hours ago

Ben CrowellBen Crowell

53.8k6165313

$endgroup$

add a comment | 

Your Answer

StackExchange.ifUsing("editor", function ()
return StackExchange.using("mathjaxEditing", function ()
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix)
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
);
);
, "mathjax-editing");

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "151"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);



);

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fphysics.stackexchange.com%2fquestions%2f470954%2fequivalence-principle-before-einstein%23new-answer', 'question_page');

);

Post as a guest

Name

Email

Required, but never shown

5

$begingroup$

There are lots of different ways of stating the equivalence principle, and they're not all logically ... er ... equivalent to each other.

Names that come up in this connection, from before Einstein, are Galileo and Eotvos. Experiments that test the equality of gravitational and inertial mass are called Eotvos experiments.

Einstein's version of the equivalence principle is more radical than anything that Galileo or Newton envisioned. It entails throwing away the whole concept of a universal reference frame and instead defining inertial frames as local, free-falling frames. Previously, people had imagined that there was a frame of the "fixed stars," which was as good an approximation to an inertial frame as we would ever need. But according to relativity, observers in New York and Beijing can't even have the same frame of reference.

Taking the equivalence principle seriously also leads to the prediction of gravitational time dilation, which is something that nobody before Einstein had imagined.

share|cite|improve this answer

answered 3 hours ago

Ben CrowellBen Crowell

53.8k6165313

$endgroup$

add a comment | 

5

$begingroup$

There are lots of different ways of stating the equivalence principle, and they're not all logically ... er ... equivalent to each other.

Names that come up in this connection, from before Einstein, are Galileo and Eotvos. Experiments that test the equality of gravitational and inertial mass are called Eotvos experiments.

Einstein's version of the equivalence principle is more radical than anything that Galileo or Newton envisioned. It entails throwing away the whole concept of a universal reference frame and instead defining inertial frames as local, free-falling frames. Previously, people had imagined that there was a frame of the "fixed stars," which was as good an approximation to an inertial frame as we would ever need. But according to relativity, observers in New York and Beijing can't even have the same frame of reference.

Taking the equivalence principle seriously also leads to the prediction of gravitational time dilation, which is something that nobody before Einstein had imagined.

share|cite|improve this answer

answered 3 hours ago

Ben CrowellBen Crowell

53.8k6165313

$endgroup$

add a comment | 

$begingroup$

There are lots of different ways of stating the equivalence principle, and they're not all logically ... er ... equivalent to each other.

Names that come up in this connection, from before Einstein, are Galileo and Eotvos. Experiments that test the equality of gravitational and inertial mass are called Eotvos experiments.

Einstein's version of the equivalence principle is more radical than anything that Galileo or Newton envisioned. It entails throwing away the whole concept of a universal reference frame and instead defining inertial frames as local, free-falling frames. Previously, people had imagined that there was a frame of the "fixed stars," which was as good an approximation to an inertial frame as we would ever need. But according to relativity, observers in New York and Beijing can't even have the same frame of reference.

Taking the equivalence principle seriously also leads to the prediction of gravitational time dilation, which is something that nobody before Einstein had imagined.

share|cite|improve this answer

answered 3 hours ago

Ben CrowellBen Crowell

53.8k6165313

$endgroup$

share|cite|improve this answer

answered 3 hours ago

Ben CrowellBen Crowell

53.8k6165313

answered 3 hours ago

Ben CrowellBen Crowell

53.8k6165313

answered 3 hours ago

Ben CrowellBen Crowell

53.8k6165313