_Wave-lengths of Fraunhofer Lines and Prominent Lines in Line Spectra_ FRAUNHOFER LINES ======================================================================== Line |Color | Wave-lengths | Source | | (µµ = µ/1000) | ------------------+------+---------------------+------------------------ A |Red | 759.4 (band) |Oxygen in atmosphere. a |Red | 718.5 (band) |Water vapor atmosphere. B |Red | 686.7 |Oxygen vapor atmosphere. C |Red | 656.3 |Hydrogen in sun. D_{1} D_{2} |Yellow| 589.6, 589.0 |Sodium in sun. E |Green | 527.0 |Calcium in sun. b_{1} b_{2} b_{4} |Green | 518.4, 517.3, 516.8 |Magnesium in sun. F |Blue | 486.1 |Hydrogen in sun. G |Violet| 430.8 |Calcium in sun. H K |Violet| 396.9, 393.4 |Calcium in sun. ------------------+------+---------------------+------------------------ BUNSEN FLAME LINES =============================================== Source | Color | Wave-lengths (µµ = µ/1000) ----------+--------+--------------------------- Potassium | Red | 769.9, 766.5 (double) Lithium | Red | 670.8 Sodium | Yellow | 589.6, 589.0 (double) Thallium | Green | 535.1 Magnesium | Green | 518.4 Strontium | Blue | 460.7 ----------+--------+--------------------------- PLÜCKER TUBE LINES =============================================== Source | Color | Wave-lengths (µµ = µ/1000) ----------+--------+--------------------------- Mercury | Yellow | 579.0, 576.9 | Green | 546.1 | Blue | 491.6, 435.8 | Violet | 407.8, 404.7 Hydrogen | Red | 656.3 | Blue | 486.1, 434.1 Helium | Red | 728.2, 706.5, 667.8 | Yellow | 587.6 | Green | 504.8, 501.6, 492.2 | Blue | 471.3, 447.2 | Violet | 438.8, 402.6, 388.8 ----------+--------+---------------------------