Pond water sample

Here can be seen some types of algae (or some type of plant matter) as well as something that I suppose is a form of worm (based on the difference in movement speed and pattern between these and the plant matter). #caltechbi1

Comparison of Tissues (Bi 1 Extra Credit)

This sample of a stalk of grass was plucked from the lawn in front of Lloyd House at 4:00 on June 1. The sample (and all of the other samples in this post) was placed on a glass slide and covered with a cover slip. The snapshot seems to show individual cells in the stalk…

Assorted spices from the Alley 7 public spice cabinet

This post is a collection of pictures of various spices/powders found in the public spice cabinet in Alley 7 of the Dabney House at Caltech. Small pinches of each type of “spice” were taken from each bottle interest. Time: 4:00-6:00 pm, 5/2/19 #caltechbi1

Oriental hybrid Lilium Candium Style Sample

The style sample was obtained from an oriental hybrid lilium candium at 9:55 p.m. on Friday, May 31 at the California Institute of Technology in Pasadena, California. The flower was from an unknown origin, as it was obtained on Thursday, May 16 at a formal dinner event in Blacker hovse at Caltech. Both images reveal…

Eyeshadow Sample

The eye shadow sample was obtained from a 4.5 g Pixi by Petra Beauty Blush Duo in Peach Honey at 9:50 p.m. on Friday, May 31 at the California Institute of Technology in Pasadena, California. It was obtained by scraping the surface of the eye shadow over the slide. Because the sample had some shimmer,…

Black Pepper Sample

The salt sample was obtained from a 1.25 oz Market Pantry branded ground Black Pepper container at 9:46 p.m. on Friday, May 31 at the California Institute of Technology in Pasadena, California. Both images show a variety of shapes and colors of the sample, showing the variety of ground pepper. This is likely due to…

Salt Sample

The salt sample was obtained from a 3.75 oz Market Pantry branded Iodized salt container at 9:44 p.m. on Friday, May 31 at the California Institute of Technology in Pasadena, California. Both images show a clear, rounded square shape like the cube shape of the salt crystals. The center is more transparent than the edges,…

Fingernail dirt up close

This is the magnified view of a piece of dirt that was under my fingernail. The dirt is likely a mixture of dead skin cells, since my fingertips were peeling, and machining oil and grime from the machine shop. There is an interesting blue thing, and some odd brown flecks of dirt suspended in the…

Yellow Flower and Leaf on Caltech Campus

The sample above was obtained at approximately 6:30 pm, in the area near the gated entrance to Ruddock House (within ~50ft of the gate). It was prepared by obtaining a flower, and rubbing its onto a slide, which was placed onto the foldscope. It is possible to dark spots, which are pollen, in the resultant…

Aged Serbian bellflower pollen

My sample of Serbian bellflower pollen from 5/8/2019 was left in my foldscope for the past few weeks, and changed interestingly in that time. Previously, the pollen appeared to be a fine dust of very small particles, but now, it appeared to be bright orange and visibly grainy. The pollen also appears to have become…

Waterjet sand

This shows the fine grains of garnet sand and metal dust generated by the waterjet process clumping together in a semi-organized crystalline structure. The sample was obtained on 5/21/2019 at 5pm by taking a spoonful of the muddy water, and eyedropping it onto a foldscope slide. #caltechbi1

Foldscope images of plants for extra credit (Additional part)

This is the additional part for the foldscope extra credit. These pictures were all taken by the author independently. The pollen of the red flower (right) and the location of the red flower used to prepare the sample (left). The foldscope image shows yellow particles of the pollen. The sample was obtained outside the Sherman…

Close-up of Stamen from Star Jasmine Flower in Avery Courtyard

Here is a close-up of the stamen of a star jasmine flower from inside Avery Courtyard. We observe that the stamen is translucent and has curved edges. The sample was obtained in Avery Courtyard Tuesday afternoon at 3:30 PM. The stamen was taken from the inside of one of these flowers and placed on a…

Pollen from Agapanthus Plant in Avery Courtyard

Here we see a close-up of pollen from an agapanthus plant in Avery Courtyard. We observe that the pollen grains resemble grains and are elliptical. The sample was obtained in Avery Courtyard Tuesday afternoon at 3:30 PM. The pollen was taken from the stamen of the flower and rubbed onto the glass slide, taped over,…

Facial Cream

Although I’m not entirely sure what this cream is for, it is interesting due to the consistent and small particle size that is seen through the foldscope. I am assuming that this is so that it can be absorbed into the skin and doesn’t leave any particles/residue on the surface of the skin. Although, I…

BBBbrown

This is a brown fleck of dirt from the pond south of the Beckman Behavioral Biology building at Caltech in Pasadena, CA. It was obtained on May 31, 2019 at 5pm. This was taken from one of the many clusters of dirt in the pond, by taking a spoonful of the water and eyedropping it…

Seaweed wrap from Caltech’s dining hall

This photo is of a sheet of seaweed. You can see a pebble like cellular pattern throughout the seaweed. This specimen was obtained by unraveling the seaweed from an ahi tuna wrap from the Caltech Dining Hall, better known as Chandler. It was obtained around noontime on May 31st.

Head of Common Fruit Fly

Sample collected from above my bed in Avery House on 5/31/19 at ~4:30pm. The fly was pressed against the wall shown above with a finger, then placed onto a slide with a cover slip and inserted into the foldscope. Both of its antennas’ flagellar structures and the silhouette of its compound eyes can be seen….

Wings from Common Fruit Fly

Sample collected from above my bed in Avery House on 5/31/19 at ~4:30pm. The fly was pressed against the wall shown above with a finger, then placed onto a slide with a cover slip and inserted into the foldscope. Wing margin and some bristles/hairs can be seen. #caltechbi1

Fly wing by turtle pond at Caltech

This is the wing of a fly taken from turtle pond on Caltech's campus around 4pm on May 31st. The fly itself had already passed on. It was found on the edge of a pond where turtles can be found sitting. You can see the branching structure of the wing and the transparency of the...

Leaf Sample

Sample was collected from tree of unknown species near Avery House’s west entrance inside its gates on 5/31/19 at ~1:30pm. Leaf was plucked from the tree and inserted into foldscope without a slide. The leaf’s veins can be seen. #caltechbi1

Soil Sample from Pothos Plant

Soil sample collected from pothos plant in my room in Avery House on 5/31/19 at ~2:15pm. Soil was mixed in water, then dropped onto a slide with a cover slip on top, and observed through foldscope. Sample contains both inorganic mineral particles and potentially organic matter (as hinted by what seems like cells). #caltechbi1

Facial Skin under Foldscope

The image above is of some dead facial skin, observed under foldscope. It can be seen that the skin shows a general web pattern, with random embedding of bigger yellow circles. These circles might be where the pores were. No specific and complete cell structure can be distinguished in this picture. This might be caused…

Old Leaf Bud from Pothos Plant

Sample of an old, browned lead bud from a pothos plant collected 5/31/19 at ~1:30pm in my room in Avery House. Plant cells are arranged in thin parallel lines. Sample was peeled by hand from the plant and inserted into the foldscope without a slide. #caltechbi1

Hair Sample

Black hair sample collected 05/31/19 at ~1:00pm from my hairbrush. Sample was inserted into foldscope without a slide.#caltechbi1

Stem Sample from Pothos Plant

Sample collected from pothos plant in my room in Avery House on 5/31/19 at ~7pm. Piece of stem was cut from plant with a pocket knife. The same knife was used to slice a thin layer (not a cross-section, but a lateral slice) of the stem, which was placed onto a slide and observed through…

10 Biological Samples

Rebecca Mikofsky Bi 1 Extra Credit Section 4 I found 10 different items around Caltech’s campus in Southern California and imaged them using my foldscope. Pollen of yellow hibiscus (Hibiscus brackenridgei). It was taken from in front of Page House on Caltech’s campus. It was collected and prepared on 5/9/19. 2. Blood from a cut…