Related topics: particles

Which is the perfect quantum theory?

For some phenomena in quantum many-body physics, several competing theories exist. But which of them describes a quantum phenomenon best? A team of researchers from the Technical University of Munich (TUM) and Harvard University ...

The high cost of perfectionism

A little self-doubt at work can be a good thing, but like anything else—too much can be a bad thing.

Mowing the astroturfers

A grassroots movement is one that emerges and evolves naturally, growing new support as it does so. "Astroturfing" is the opposite of that. It is a movement support for which is bought and paid for. It has the look of a grassroots ...

How Venus and Mars can teach us about Earth

One has a thick poisonous atmosphere, one has hardly any atmosphere at all, and one is just right for life to flourish – but it wasn't always that way. The atmospheres of our two neighbours Venus and Mars can teach us a ...

Pale blue dot – or not?

Appearances can be deceiving. This thick, cloud-rich atmosphere rains sulphuric acid and below lie not oceans but a baked and barren lava-strewn surface. Welcome to Venus.

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A phenomenon (from Greek φαινόμενoν), plural phenomena, is any observable occurrence. Phenomena are often, but not always, understood as 'appearances' or 'experiences'. These are themselves sometimes understood as involving qualia.

The term came into its modern philosophical usage through Immanuel Kant, who contrasted it with noumenon (for which he used the term Ding an sich, or "thing-in-itself"), which, in contrast to phenomena, are not directly accessible to observation. Kant was heavily influenced by Leibniz in this part of his philosophy, in which phenomenon and noumenon serve as interrelated technical terms.

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