﻿ Richard Feynman on Objectivity - Dictionary of Arguments

# Dictionary of Arguments

Objectivity: is a property of determinations about facts. It is assumed that the properties attributed to the facts are determined by the facts and are not, or as little as, influenced by the attributing person. In order to determine whether this requirement is fulfilled, consideration must be given to the methods of access to information. This goes beyond the facts considered.

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Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments.

Author Item Summary Meta data
I 474
Aberration: a telescope must be slightly tilted in the direction of movement of the earth.
((s) while the light is traveling in the telescope, the entire system moves "to the right", i.e., the light enters the eyepiece in the "second" telescope drawn to the right of it.)
Feynman: "squashed ruler".
Because of the contraction effect:

tan Θ = v/c
√ (1 - v²/c²)
or

sin Θ = v/c.

I 475
Objectivity/Objective/Measuring/Aberration/Feynman: how can we say objectively where the star "is" at all?
Solution: 6 months later we have to tilt the telescope in the other direction because of the earth's movement around the sun. This is the only reason why we can determine aberration at all.

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Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution.
The note [Author1]Vs[Author2] or [Author]Vs[term] is an addition from the Dictionary of Arguments. If a German edition is specified, the page numbers refer to this edition.

Feynman I
Richard Feynman
The Feynman Lectures on Physics. Vol. I, Mainly Mechanics, Radiation, and Heat, California Institute of Technology 1963
German Edition:
Vorlesungen über Physik I München 2001

Feynman II
R. Feynman
The Character of Physical Law, Cambridge, MA/London 1967
German Edition:
Vom Wesen physikalischer Gesetze München 1993

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Ed. Martin Schulz, access date 2019-05-20