title: Radio waves from grains in HII regions.
abstract: A mechanism is described whereby the optical radiation from stars embedded in dust-filled HII regions may be converted to microwave and longwave radio emissions.
authors.affiliation: Institute of Theoretical Astronomy, Cambridge.
authors.forename: F
authors.initials: F
authors.lastname: Hoyle
authors.forename: N C
authors.initials: NC
authors.lastname: Wickramasinghe