Identificatie
referentie code
Titel
Datum(s)
- 10 Mar. 1836 (Vervaardig)
Beschrijvingsniveau
Omvang en medium
4 pp
Context
Naam van de archiefvormer
archiefbewaarplaats
Geschiedenis van het archief
Directe bron van verwerving of overbrenging
Inhoud en structuur
Bereik en inhoud
Edinburgh - JDF has not seen the experiments by Biot [Jean Baptiste Biot] on circular polarisation which WW gave an account of in his last letter: they 'must have been made subsequent to, and in consequence of mine'. WW is wrong to suggest to JDF that he has neglected the influence of the crystalline structure on heat: 'Depend upon it that Biot has not got the effects you mention, with Dark heat, and hence the information it gives is only partial, shewing that light and heat disappear together as they always do'. He has been investigating the action of metals on heat which show both remarkable analogies but also differences with light: 'P.S. Since writing the above I have (partly) a doubt which has much perplexed me. The action of metals gives a maximum polarizing angle for heat greater than for Light, whence I concluded that the index of refraction must be greater for the former than the latter, - contrary to my general views'. He finds in David Brewster's paper 'that a precisely similar fact occurs in the action of metals on light; the Red ray is polarized at a greater incidence than the blue'.
Waardering, vernietiging en slectie
Aanvullingen
Ordeningstelsel
Voorwaarden voor toegang en gebruik
Voorwaarden voor raadpleging
Voorwaarden voor reproductie
Taal van het materiaal
Schrift van het materiaal
Taal en schrift aantekeningen
Fysieke eigenschappen en technische eisen
Toegangen
Verwante materialen
Bestaan en verblifplaats van originelen
Bestaan en verblijfplaats van kopieën
Related units of description
Aantekeningen
Alternative identifier(s)
Trefwoorden
Onderwerp trefwoord
Geografische trefwoorden
Naam ontsluitingsterm
- Biot, Jean-Baptiste (1774-1862) physicist (Onderwerp)