James Vinson

<figure class="wp-block-image">
 <img alt="pondwater" class="wp-image-143476 gcloudimg" data-attachment-id="143476" data-comments-opened="1" data-image-meta='{"aperture":"1.8","credit":"","camera":"iPhone 7","caption":"","created_timestamp":"1554918513","copyright":"","focal_length":"3.99","iso":"40","shutter_speed":"0.066666666666667","title":"","orientation":"6"}' data-image-title="pondwater" src="https://storage.googleapis.com/microcosmosdelta.appspot.com/images/transfer_143474/pondwater.jpg"/>
</figure>

 This is an image of pond water taken from Millikan Pond on Wednesday April 10th in the afternoon. The image was taken at 5 PM on the same day. The sample was obtain from the pond in a plastic vial and then pipetted onto a slide for viewing in the foldscope.


 In the image you can see what appear to be cells with a clear outer membrane and darker interior. The image is also somewhat cloudy due to either air bubbles or the lens being dirty.


 Some questions I have about the image are: what is the diameter of those cells. In order to know this accurately I would have had to take an image that also included a scale bar in order to have a reference length. It would also be nice to know whether the smudges in the picture are due to the lens being dirty. To know this I would have to take another sample before cleaning the lens to see if the smudges go away. Then, I would clean the lens and take a third sample. If the smudges only went away in the third sample that would show the original smudges in this image are from a dirty lens.


 #caltechbi1

Pond Water Foldscope Image

<figure class="wp-block-image">
 <img alt="20190510_211236" class="wp-image-149602 gcloudimg" data-attachment-id="149602" data-comments-opened="1" data-image-meta='{"aperture":"1.7","credit":"","camera":"SM-G950U","caption":"","created_timestamp":"1557522755","copyright":"","focal_length":"4.25","iso":"1250","shutter_speed":"0.25","title":"","orientation":"6"}' data-image-title="20190510_211236" src="https://storage.googleapis.com/microcosmosdelta.appspot.com/images/transfer_149601/20190510_211236.jpg"/>
</figure>
<figure class="wp-block-image">
 <img alt="20190510_000650" class="wp-image-149603 gcloudimg" data-attachment-id="149603" data-comments-opened="1" data-image-meta='{"aperture":"1.7","credit":"","camera":"SM-G950U","caption":"","created_timestamp":"1557446810","copyright":"","focal_length":"2.95","iso":"1250","shutter_speed":"0.083333333333333","title":"","orientation":"8"}' data-image-title="20190510_000650" src="https://storage.googleapis.com/microcosmosdelta.appspot.com/images/transfer_149601/20190510_000650.jpg"/>
 <figcaption>
 This image shows pollen as seen through a foldscope (the picture taken with an iPhone). The pollen was taken from red flowers outside of Chandler at approximate 9:00 PM on May 10th. The sample was taken by taking off one flower and carefully extracting the stamen from the center of the flower and then carefully scraping the anthers onto a glass slide, attempting not to crush them in the process.
 
 
 
 Some questions I have about my image are, what is the inner structure of each anther, and if I crushed them further would I be able to tell with the low magnification of the foldscope. I would also like to know how pollens from different types of plants compare in shape, size, and color, and whether those differences are particularly evolutionarily meaningful. Finally, I don’t have a scale within my picture so I don’t know how the length of my picture and thus can’t tell the size of the pollen grains. Adding a scale to know the size of the pollen grains would be interesting.
 
 
 #caltechbi1
 </figcaption>
</figure>

James Vinson

Earth

Posts

Pond Water Foldscope Image

Pollen from Flowers Outside Chandler

Locations

Statistics

Type of Sample

Foldscope Lens Magnification