Melba Nuzen

Attached is a video of the sample as viewed through the foldscope. This sample was obtained on Tuesday, April 9 around 6:30pm at the Turtle Pond at Caltech. Visible in the sample is a small organism (dark dot in the bottom right-hand corner) moving in its environment. Link to video: https://photos.app.goo.gl/o2u8Wj8M6EoWxJo9A


 Questions about the image: Also visible in the video are small green blobs that also appear to be moving slightly. These may be some kind of plant cells that are floating in the water, but could these also be animals?


 Additional video: https://photos.app.goo.gl/2bfxXppDUBuunU1t9 #caltechbi1



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Bi1: Recitation 1 Observations

Attached is a photo of a pollen sample collected from a large yellow flower at the base of the turtle pond. The sample was obtained on Saturday, 5/5/2019 at 5pm when a piece of the stamen was broken off and the pollen was gently tapped onto the glass slide to collect pollen dust.


 In the actual image, several molecules of elongated pollen are visible. A few questions arise from seeing the image:


 How do different flowering seasons for different plants affect the shape of pollen? What characteristics are beneficial for the overall adhesiveness of pollen to insects such as bees?

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 The name of this flower is daylily, or Hemerocallis lilioasphodelus.


 #caltechbi1

Bi1: Foldscope Assignment

Below is the foldscope image of a purple Lily of the Nile’s pollen. This pollen sample was collected on May 28th around 2pm in Avery Courtyard at Caltech by removing the flower’s stamen from the petals and gently tapping the stamen onto the glass slide to collect pollen. After putting on a cover slide, the photo below was obtained. We can see in the image individual grains of pollen, which are shaped oblongly.
 

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 #caltechbi1

Foldscope Extra Credit: Lily of the Nile

Foldscope Extra Credit: Star Jasmine Flower

A filament of the tree standing in Avery House’s inner courtyard at Caltech was collected on May 28th, 2019 at around 3pm. The foldscope image of the filament and the tree itself can be seen below. The sample image was taken by removing a tiny portion of the branch filament and placing it onto a glass slide.

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 #caltechbi1

Foldscope Extra Credit: Avery Tree

Foldscope Extra Credit: Yellow Dandelion Flower

On Tuesday, May 28 at around 3pm, leaves were taken from Avery House’s inner courtyard at Caltech. The leaves were carefully removed from the shrubs and an individual leaf was placed on the foldscope slide. A bright light was required to obtain the image below, as the leaves were thicker than typical foldscope samples.


 In the foldscope image, small, circular objects represent the individual stomata within the leaf.

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 #caltechbi1

Foldscope Extra Credit: Perennial Shrub

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 Avery House courtyard in Caltech, Pasadena is home to a small purple wildflower that grows in the grass of the inner courtyard. This particular sample of flower was collected at around 2pm on Tuesday, May 28, 2019. Tweezers were used to extract pollen from within the throat of the flower. The foldscope image to the right depicts a cluster of pollen, in which individual circular grains can be seen around the edges of the mass.


 #caltechbi1

Foldscope Extra Credit: Purple Wildflower

Red roses grow in the planters outside of Avery outer courtyard, between Avery House and Annenberg Building at Caltech in Pasadena. Samples of these roses were taken on May 28th at around 3pm by removing wilted flowers. The stamen of these flowers were placed onto a foldscope slide to be examined.

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 The image taken through the foldscope can be seen on the right; the image depicts the main stem portion of the rose’s stamen. Because the sample was a wilted sample, the foldscope has less coloring than a typical live sample would.


 #caltechbi1

Foldscope Extra Credit: Red Roses

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 Many dandelions can be found in Avery House’s inner courtyard at Caltech in Pasadena. This sample of dandelion was taken at around 2pm on Tuesday, May 28th, 2019. The dandelion seedhead has very thin filaments at the top, which help it carry the seed in the wind. These thin filaments can be seen in our foldscope image above, on the right; this image was obtained by placing the dandelion seedhead onto the foldscope and taking the image with a mobile cellular device.


 #caltechbi1

Foldscope Extra Credit: Dandelion Seedhead

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 These potted plants can be found in Avery’s outer courtyard. On May 28th, 2019, a needle of the plant was taken and placed on a foldscope slide. There is additional glare in the foldscope photo because the plant needle is thicker than a usual foldscope specimen. The edges of the plant needle are ragged from exposure to weather and sunshine.


 #caltechbi1

Foldscope Extra Credit: Potted Needle Plant

On Wednesday, May 29th, a single hair was removed from a human scalp in Avery House, in Caltech in Pasadena at around 9pm by pulling out a single strand of hair. Below is an image of the human hair. The bulb at the base of the hair is the hair root.

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 #caltechbi1

Melba Nuzen

Earth

Posts

Foldscope Extra Credit: Red Roses

Foldscope Extra Credit: Dandelion Seedhead

Foldscope Extra Credit: Potted Needle Plant

Foldscope Extra Credit: Human Hair + Root

Bi1: Recitation 1 Observations

Bi1: Foldscope Assignment

Foldscope Extra Credit: Lily of the Nile

Foldscope Extra Credit: Star Jasmine Flower

Foldscope Extra Credit: Avery Tree

Foldscope Extra Credit: Yellow Dandelion Flower

Foldscope Extra Credit: Perennial Shrub

Foldscope Extra Credit: Purple Wildflower

Foldscope Extra Credit: Red Roses

Foldscope Extra Credit: Dandelion Seedhead

Foldscope Extra Credit: Potted Needle Plant

Foldscope Extra Credit: Human Hair + Root

Bi1: Recitation 1 Observations

Bi1: Foldscope Assignment

Foldscope Extra Credit: Lily of the Nile

Foldscope Extra Credit: Star Jasmine Flower

Foldscope Extra Credit: Avery Tree

Foldscope Extra Credit: Yellow Dandelion Flower

Foldscope Extra Credit: Perennial Shrub

Foldscope Extra Credit: Purple Wildflower

Foldscope Extra Credit: Red Roses

Foldscope Extra Credit: Dandelion Seedhead

Foldscope Extra Credit: Potted Needle Plant

Foldscope Extra Credit: Human Hair + Root

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