Penrose stairs

English

Penrose stairs.

Etymology

After a drawing by Lionel Penrose and Roger Penrose.

Noun

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
• (deprecated template usage) {{trans-mid}}
• Swedish: Penroses trappa c

Further reading

• Penrose stairs on Wikipedia.Wikipedia