Penrose stairs

English

Penrose stairs.

Etymology

After a drawing by Lionel Penrose and Roger Penrose.

Noun

Penrose stairs pl (plural only)

1. An impossible loop of endlessly ascending and descending stairs, or an optical illusion appearing to depict such a loop.
   • For quotations using this term, see Citations:Penrose stairs.

Synonyms

• impossible staircase
• Penrose staircase
• Penrose steps

Translations

endless staircase

• Finnish: Penrosen portaat
• German: unmögliche Treppe f
• Swedish: Penroses trappa c

Further reading

• Penrose stairs on Wikipedia.Wikipedia