National Day, Singapore II., a photo from Bedok, East

Photographer's Note

This display was spotted following yesterdays National Day Parade in
Singapore.

Salts are used to colour the fireworks. Commonly used ions include:

RED - strontium salts, lithium salts
lithium carbonate, Li2CO3 = red
strontium carbonate, SrCO3 = bright red

ORANGE - calcium salts
calcium chloride, CaCl2
calcium sulfate, CaSO4·xH2O, where x = 0,2,3,5

GOLD - incandescence of iron (with carbon), charcoal, or lampblack

YELLOW - sodium compounds
sodium nitrate, NaNO3
cryolite, Na3AlF6

ELECTRIC WHITE - white-hot metal, such as magnesium or aluminum
barium oxide, BaO

GREEN - barium compounds + chlorine producer
barium chloride, BaCl+ = bright green

BLUE - copper compounds + chlorine producer
copper acetoarsenite (Paris Green), Cu3As2O3Cu(C2H3O2)2 = blue
copper (I) chloride, CuCl = turquoise blue

PURPLE - mixture of strontium (red) and copper (blue) compounds

SILVER - burning aluminum, titanium, or magnesium powder or flakes.

Cropped & framed.

Comments and observations invited.

Regards,

Vic, Singapore. 10th August 2004

bfly, mat, lemon_logix, Rhiannon, A-la-N, ishai, Endy, Olgabelokur has marked this note useful

Critiques | Translate

bfly (5773) 2004-08-10 9:00

beautiful picture :) and thank you very much for the detailed info..I never knew anything about their contents..

Tweety (4544) 2004-08-10 9:07

Superbe ! Le filet du à la longueur de l'exposition est superbe. Bravo !

es841 (2113) 2004-08-10 9:16

Nice shot, great colors... congratulations!
I like it!

[2] +

lemon_logix (1054) 2004-08-10 9:46

what a note! i didn't know about the salt thing. Fabulous fireworks display you have captured, i am sure you have a good time.

Rhiannon (1728) 2004-08-10 10:17

Very beautiful picture. Excellent sharpness and colours. Was it difficult to get that freeze effect? I mean, due to the darkness the exposure must have been quiet long...
Impressive work and a very fulfilling and interesting note.
Thanks for sharing!

cecile (4193) 2004-08-10 17:02

exercice compliqué, mais parfaitement réussi ici, bravo

Endy (1025) 2004-08-10 22:13

Nice firework picture. The exposure is just perfect! The sharpness and the colors are excellent. Not easy shot but very well done.

danielswalsh (13591) 2004-08-11 23:41

Good Shot Vic.
I find it amazing how you captured the explosion of the fireworks, but no "flash" from when it exploded? How'd you manage that?

Cheers,
Dan

danby1 (3697) 2004-12-21 11:39

very hard to get a shot like this and with a description like that you dererve a 3 point smily!! well done