What is a phenomenon in the philosophy of Immanuel Kant?

In Immanuel Kant's philosophy, a phenomenon refers to any observable event or object of the senses. Kant developed this technical term in contrast to the noumenon, which represents things as they exist independently of human sense and observation. Through transcendental idealism, phenomena constitute the realm of human experience, while the underlying reality remains otherwise unknowable.

What we know

• A phenomenon is defined in modern philosophical usage by Immanuel Kant as any observable event or object of the senses. [3]
• Kant used the term phenomenon in direct contrast with the noumenon, which cannot be directly observed. [3]
• The conceptual pairing of phenomenon and noumenon was influenced by Gottfried Wilhelm Leibniz and also predates Kant in the work of Sextus Empiricus. [3] · medium confidence
• Phenomena serve as the manifestations of objects, contrasted with the status of objects as they are independently of representation known as the thing-in-itself. [5]

Still open

• The exact nature of the relationship between Kant's concept of the noumenon and the thing-in-itself is not made explicit in his work and remains a subject of debate among scholars.

Where to go next

• compared withWhat is a noumenon in Kantian philosophy?
• the bigger pictureWhat is the thing-in-itself in Kant's work?
• how it workedHow does transcendental schemata connect concepts and senses?
• whoWho influenced Immanuel Kant's philosophical terminology?
• how we knowHow did ancient Pyrrhonism use the terms phenomenon and noumenon?
• an unexpected connectionHow do ancient skeptics connect to Kantian epistemology?Ancient Pyrrhonist philosopher Sextus Empiricus used phenomenon and noumenon as technical terms long before Kant integrated them into transcendental idealism.

Sources

• [1]noumenon (Wikidata Q239581) · CC0 1.0
• [2]Noumenon · CC BY-SA 4.0
• [3]Phenomenon · CC BY-SA 4.0
• [4]Schema (Kant) · CC BY-SA 4.0
• [5]Thing-in-itself · CC BY-SA 4.0