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[paso-blog]

I used a digital microscope to find what the umbrella textile was made of and it turned out to be nylon bundles as it can be seen here.

Upon pouring water on the umbrella , I observed that the cohesive forces at the surface of the droplet create tension , and a smooth surface, like that of nylon , minimises any disruptions to this tension, allowing droplets to remain more spherical.

I applied force from underneath the umbrella.

Surface tension is like a “skin” on the water’s surface caused by the attractive forces between water molecules. When the droplet is disrupted, surface tension pulls it back into a spherical shape, leading to a bouncing effect.For larger droplets, their increased mass and inertia make them less influenced by surface tension during a minor disturbance. Instead of bouncing, the energy from the disturbance is more likely to create waves or ripples on the droplet’s surface. The cohesive forces still play a role, but the overall response is different due to the droplet’s size and weight.

In the above video you can see the ripples/waves formed and in the photo you can see that the droplets become circular after letting go of the surface

[paso-blog]

I recorded this using a digital microscope, to get a nice video of flow due to gravity and capillary action.

Video is of 480p and 20fps sped up three times

[paso-blog]

I conducted spontaneous and random experiments to uncover the subtle marvels we often overlook in our daily surroundings. Using water and ink, I explored the unpredictability of natural occurrences. , I utilized my smartphone and a digital microscope with up to 1000x magnification to systematically document and analyze these impromptu phenomena.

in the video , I concluded

The movement of ink through water shows the random motion of molecules

When ink is dropped on water, it spreads in circles due to the surface tension of the water. Surface tension is the result of cohesive forces between water molecules at the surface. The ink disrupts this tension, causing the water to push the ink outward, creating a circular pattern. 

It expands as it descends, likely due to the interaction of ink with the water’s surface tension. The initial circle forms when the ink is placed on the water, and as it sinks, it continues to spread, influenced by the dynamics of the water molecules and surface tension. In the end I can see small circles being created around the larger circle so the boundary of this larger circle experiences variations in surface tension and fluid dynamics, leading to the creation of smaller circles.