das Psi
psi
The twenty-third letter of the Greek alphabet. Its uppercase form is Ψ, and its lowercase form is ψ.
EXAMPLE
Im griechischen Alphabet steht das Psi zwischen dem Chi und dem Omega.
In the Greek alphabet, psi comes between chi and omega.
das Psi
psi
das Psi, die Psis
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Meanings
das Psi
psi
In parapsychology, a collective term for presumed abilities and processes such as telepathy or influencing objects through mental powers. Their existence has not been scientifically proven.
EXAMPLE
Die Forschungsgruppe untersuchte, ob sich Psi unter kontrollierten Bedingungen nachweisen lässt.
The research group investigated whether psi could be detected under controlled conditions.
Forms
Forms adapted from the German Wiktionary entry Psi, by Wiktionary contributors, licence CC BY-SA 4.0.
At a glance (das)
| gender | neuter das |
|---|---|
| plural | die Psis |
| genitive | des Psi |
The four cases (das)
| singular | plural | |
|---|---|---|
| nominative | das Psi | die Psis |
| accusative | das Psi | die Psis |
| dative | dem Psi | den Psis |
| genitive | des Psi des Psis | der Psis |
The article changes with the case; it is shown in colour.
At a glance (das)
| gender | neuter das |
|---|---|
| genitive | des Psi |
The four cases (das)
| singular | plural | |
|---|---|---|
| nominative | das Psi | – |
| accusative | das Psi | – |
| dative | dem Psi | – |
| genitive | des Psi | – |
The article changes with the case; it is shown in colour.
Usage tips
Symbol in formulas
In mathematical and physics texts, Psi is often used as the name of a formula symbol. In quantum physics, it often denotes a wave function; the specific quantity meant is explained by the respective text.
EXAMPLE
In dieser Gleichung bezeichnet Psi die Wellenfunktion des Teilchens.
In this equation, psi denotes the particle's wave function.
Recognizing compounds
In texts about parapsychology, „Psi“ (psi) also appears as the first part of compounds such as „Psi-Forschung“ (psi research) and „Psi-Phänomene“ (psi phenomena). The second part indicates whether the subject is the investigation or the presumed phenomena.
EXAMPLE
Der Artikel zur Psi-Forschung beschreibt mehrere Versuche zur Gedankenübertragung.
The article on psi research describes several experiments involving telepathy.
Typical collocations
Common collocations include „an Psi glauben“ (to believe in psi), „die Existenz von Psi“ (the existence of psi), and „ein Nachweis für Psi“ (evidence for psi). Pay attention to the prepositions „an“ (in), „von“ (of), and „für“ (for).
EXAMPLE
Sie glaubt an Psi, hält den Bericht aber nicht für einen überzeugenden Nachweis für Psi.
She believes in psi, but does not consider the report convincing evidence for psi.
In real life
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