When Powell took his second trip down the Colorado River he took more tools with him so he could make better and more detailed observations. Today on your second day of observing the two canyons you had access to a more sophisticated tool, the stereoscope.
I noticed that you were making more detailed observations as this new tool was much more powerful than the hand lenses you were using yesterday.
I noticed that you were making more detailed observations as this new tool was much more powerful than the hand lenses you were using yesterday.
| 2012-10-23_rocks_in_the_two_canyons.pdf |
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