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written by
Jim Sullivan
This interactive animation can be used to compare the relative sizes of cells and organisms ranging from 2 millimeters to 20 nanometers. It initiates with a human hand holding a pin. Zoom in to see a human hair, dust mites, pollen grains, and red blood cells on the pinhead. Continue zooming and to get a sense of how very tiny bacteria and viruses are compared with a grain of pollen.
This resource is part of a larger collection of interactive animations created for the life sciences by the Cells alive! library collection. Please note that this resource requires Flash.
AAAS Benchmark Alignments (2008 Version)11. Common Themes
11D. Scale
12. Habits of Mind
12B. Computation and Estimation
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Record Link
<a href="https://www.compadre.org/portal/items/detail.cfm?ID=10721">Sullivan, Jim. Cells Alive! HowBig Interactive. January 31, 2011.</a>
AJP/PRST-PER
J. Sullivan, Cells Alive! HowBig Interactive (1994), <https://www.cellsalive.com/howbig.htm>.
APA Format
Sullivan, J. (2011, January 31). Cells Alive! HowBig Interactive. Retrieved June 8, 2025, from https://www.cellsalive.com/howbig.htm
Chicago Format
Sullivan, Jim. Cells Alive! HowBig Interactive. January 31, 2011. https://www.cellsalive.com/howbig.htm (accessed 8 June 2025).
MLA Format
Sullivan, Jim. Cells Alive! HowBig Interactive. 1994. 31 Jan. 2011. 8 June 2025 <https://www.cellsalive.com/howbig.htm>.
BibTeX Export Format
@misc{
Author = "Jim Sullivan",
Title = {Cells Alive! HowBig Interactive},
Volume = {2025},
Number = {8 June 2025},
Month = {January 31, 2011},
Year = {1994}
}
Refer Export Format
%A Jim Sullivan %T Cells Alive! HowBig Interactive %D January 31, 2011 %U https://www.cellsalive.com/howbig.htm %O application/flash
EndNote Export Format
%0 Electronic Source %A Sullivan, Jim %D January 31, 2011 %T Cells Alive! HowBig Interactive %V 2025 %N 8 June 2025 %8 January 31, 2011 %9 application/flash %U https://www.cellsalive.com/howbig.htm Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.
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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