A Sense of Scale

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written by Paul Falstad

This page compares the distance/magnitude/size of various objects or constants. This includes physical dimensions such as the diameter of particles, atoms and biological cells, the height of Mt. Everest, depth of the Earth's crust, distances to planets, stars, and galaxies. Colored histograms are displayed for visual aid. Most of the physical quantities are linked to online references.

http://www.falstad.com/scale/

Subjects	Levels	Resource Types
General Physics - Measurement/Units	- High School - Lower Undergraduate - Informal Education	- Instructional Material = Tutorial - Reference Material

Intended Users	Formats	Ratings
- Learners - Educators	- text/html - image/gif	Currently 5.0/5 Rated 5.0 stars by 1 person Want to rate this material? Login here!

Access Rights:: Free access
Restriction:: Has a copyright or other licensing restriction.
Keywords:: distance, length scales, measurement, size
Record Creator:: Metadata instance created June 21, 2004 by Melanie Carter
Record Updated:: July 12, 2008 by Taha Mzoughi
Other Collections:: The Nucleus

The Physics Front

The Physics Source

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Record Link

<a href="https://www.compadre.org/portal/items/detail.cfm?ID=1599">Falstad, Paul. A Sense of Scale.</a>

AIP Format

P. Falstad, , WWW Document, (http://www.falstad.com/scale/).

AJP/PRST-PER

P. Falstad, A Sense of Scale, <http://www.falstad.com/scale/>.

APA Format

Falstad, P. (n.d.). A Sense of Scale. Retrieved March 21, 2025, from http://www.falstad.com/scale/

Chicago Format

Falstad, Paul. A Sense of Scale. http://www.falstad.com/scale/ (accessed 21 March 2025).

MLA Format

Falstad, Paul. A Sense of Scale. 21 Mar. 2025 <http://www.falstad.com/scale/>.

BibTeX Export Format

@misc{ Author = "Paul Falstad", Title = {A Sense of Scale}, Volume = {2025}, Number = {21 March 2025}, Year = {} }

Refer Export Format

%A Paul Falstad %T A Sense of Scale %U http://www.falstad.com/scale/ %O text/html

EndNote Export Format

%0 Electronic Source %A Falstad, Paul %T A Sense of Scale %V 2025 %N 21 March 2025 %9 text/html %U http://www.falstad.com/scale/

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Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Style.org: Electronic References.

The Chicago Style presented is based on information from Examples of Chicago-Style Documentation.

The MLA Style presented is based on information from the MLA FAQ.

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