Nature, Količina 104Sir Norman Lockyer Macmillan Journals Limited, 1919 |
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Zadetki 1–3 od 87
Stran 251
... colour method of colour photography was not practical , because the plates available were insensitive to red and nearly insensitive to green . But the keys to the removal of these two great barriers to progress were soon to be found ...
... colour method of colour photography was not practical , because the plates available were insensitive to red and nearly insensitive to green . But the keys to the removal of these two great barriers to progress were soon to be found ...
Stran 253
... colour half - tone process . This was based upon James Clerk Maxwell's researches made so long ago as 1861. The drawing or ob- ject is photographed successively through three colour filters : for the red negative a green filter is used ...
... colour half - tone process . This was based upon James Clerk Maxwell's researches made so long ago as 1861. The drawing or ob- ject is photographed successively through three colour filters : for the red negative a green filter is used ...
Stran 432
... colour . This has never been surpassed by any artist of ancient or modern times in water colour . In the work before us we are presented with a series of finished sketches , mostly in for his models the most restive and elusive of all ...
... colour . This has never been surpassed by any artist of ancient or modern times in water colour . In the work before us we are presented with a series of finished sketches , mostly in for his models the most restive and elusive of all ...
Vsebina
Crabtree J H British Ferns and how to Identify | xvi |
Crawford H S The Mural Paintings and Inscriptions | xxxiii |
The Direct Determination Kew Observatory 120 The Magnetic Storm of August | xxxv |
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æther appears application appointed atomic weights birds body botany Bournemouth British Association Cambridge catalysis cent chemical chemistry chemists College colour comet Committee Council Department direction discovery economic edition Editor effect electric electrons elements energy engineering existence experiments fact fifty geological give given guanidin helium illustrated important increased industry Institute interest investigation J. J. Thomson James Watt journal jubilee knowledge laboratory large number lectures London Lord Rayleigh mathematical matter means meeting ment method mineral Museum National Physical Laboratory NATURE observations obtained October organisation paper period physical plants position possible practical present President problems production Prof progress published radiation radium recent recognised record regard Robert Hadfield Royal Society scientific workers South species technical telegony telegraphy temperature theory tical tion University W. H. Bragg wireless X-rays