Where does “Lambertian” come from?
Lambertian (English) comes from English Lambert, from Old High German beraht, from Proto-Germanic *berht, from Proto-Germanic berhtaz, from Proto-Germanic hrabnaz, from Proto-Indo-European ḱorh₂-, from Proto-Indo-European ḱer-, from Proto-Indo-European kr̥- — army.
Lambertian (English): Obeying Lambert's cosine law
Definitions
- Obeying Lambert's cosine law
Ancestry of “Lambertian”, step by step
Lambertian traces back through two separate lines of ancestry.
via English Lambert
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | Lambert | in modern use partly transferred back from the surname |
| 2 | Old High German | beraht | bright |
| 3 | Proto-Germanic | *berht | — |
| 4 | Proto-Germanic | berhtaz | bright, shining |
| 5 | Proto-Germanic | hrabnaz | raven |
| 6 | Proto-Indo-European | ḱorh₂- | — |
| 7 | Proto-Indo-European | ḱer- | to grow, to make grow, to nourish; to plait,... |
| 8 | Proto-Indo-European | kr̥- | to turn, to bend |
| 9 | Proto-Indo-European | ker- | army |
via English ian
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | ian | — |
| 2 | Irish | Eoin | John any of several people in the Bible |
| 3 | Old Irish | Iohain | John apostle |
| 4 | Latin | Iōannēs | John biblical persons |
| 5 | Ancient Greek | Ἰωάννης | — |
| 6 | Hebrew | יוחנן | Yahweh is gracious |
| 7 | Hebrew | חנון | gracious, merciful, compassionate; passive... |
| 8 | Moroccan Arabic | خنونة | mucus, snot |
| 9 | Arabic | خُنَّة | — |