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Quantum physics reveals that we never truly "touch" anything in the way we imagine. At the atomic level, interactions between particles prevent direct contact, even when it feels like we’re physically touching an object.

This is due to two key principles: the electromagnetic force and the Pauli Exclusion Principle. Electrons, which orbit the atoms of all matter, carry a negative charge. Because like charges repel, the electrons in your hand push against the electrons in a surface, creating a force that prevents them from merging. This repulsion is what we perceive as physical contact.

Beyond this, the Pauli Exclusion Principle states that no two electrons can occupy the same quantum state simultaneously. When atoms are brought close together, their electrons rearrange themselves to avoid overlapping, generating an additional repelling force.

These combined effects create the sensation of touch, even though—at the quantum level—a minuscule gap always remains between the atoms. In essence, what we experience as "touch" is actually the electromagnetic resistance between particles, not true physical contact.

2 months ago | [YT] | 2

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Medium

An Image of a Fetus Removed From the Brain of a 1-year-old Girl:

In a rare and astonishing medical case from China, doctors successfully removed a malformed twin from the brain of a 1-year-old girl.

The child had been showing signs of developmental delays and had an unusually large head, prompting further investigation. Upon examination, doctors discovered that the mass inside her brain was not a typical tumor but a partially formed twin, containing bones resembling a spine, arms, and even finger-like buds.

This extraordinary condition, known as fetus-in-fetu, occurs in approximately 1 in 500,000 births. In such cases, one twin begins to develop inside the other.

Though commonly mistaken for a type of tumor, the condition is identified by the presence of actual body parts. Fetus-in-fetu most often appears in the abdominal region, making this case even more remarkable due to the twin's growth inside the brain.

Fewer than 200 cases of fetus-in-fetu have been documented globally, and instances where the twin develops in the brain are exceedingly rare. This discovery adds to the small but significant number of unusual cases, shedding light on a condition that challenges our understanding of human development and medical anomalies.

Image via: Wolters Kluwer Health, Inc.

7 months ago | [YT] | 2

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Medium

Klein Bottle

#kleinbottle #fourthdimension #mathematics

1 year ago | [YT] | 2

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Medium

Schrodinger's cat 😼😼

#schrodingercat #thoughtexperiment

1 year ago | [YT] | 1

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Medium

Seahorses and their close relatives, sea dragons, are the only species in which the male gets pregnant and gives birth. Male seahorses and sea dragons get pregnant and bear young—a unique adaptation in the animal kingdom
🐴🐴🐴🦑🐙🐙🐙🐠🦑🐙🐠🦑🐙🐠🐙

#seahorse #pregnantanimal #uniquecharacter
#sciencefacts #knowledgesharing