Serendip is an independent site partnering with faculty at multiple colleges and universities around the world. Happy exploring!

Home › Bio 103, Lab 4, Very small space/time scales: randomness as a first mover? ›

Reply to comment

dchin's picture

Beads

Submitted by dchin on Wed, 09/30/2009 - 1:57pm.

Debbi and Janice

We conducted two trials for each bead measurement of 2, 4, and 8 microns, observing each for two minutes at a time. The first time we observed the 2 micron beads, there were 26 units of movement, meaning that it moved 65.0 microns. The second time we observed it, there were 17 units of movement, meaning that it moved 42.5 microns. The first time we observed the 4 micron beads, there were 16 units of movement, meaning that it moved 40.0 microns. The second time that we observed it, there were 8 units of movement, meaning that it moved 20.0 microns. The first time we observed the 8 micron beads, there were 10 units of movement, meaning that it moved 25.0 microns. The second time that we observed it, there were 5 units of movement, meaning that it moved 12.5 microns.

Our observations were consistent with Einstein's theory. The amount of movement decreased as the molecules got bigger. We attribute the decrease in movement between the first and second trials to the cooling of the water.

Reply

To prevent automated spam submissions leave this field empty.
8 + 1 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.

Remote Ready Biology Learning Activities

Scanning electron microscope image of SARS-CoV-2

Remote Ready Biology Learning Activities has 50 remote-ready activities, which work for either your classroom or remote teaching.

Narrative is determined not by a desire to narrate but by a desire to exchange. (Roland Barthes, S/Z)

What's New? Subscribe to Serendip Studio