Clipmarks | smarieenglish's clips

Chemistry of Firework Colors

Fri, 03 Jul 2009 22:06:58 GMT

Chemistry of Firework Colors

Excluding propellants or special effects, the points of light ejected from fireworks, termed 'stars', generally require an oxygen-producer, fuel, binder (to keep everything where it needs to be), and color producer.

Incandescence is light produced from heat. Heat causes a substance to become hot and glow, initially emitting infrared, then red, orange, yellow, and white light as it becomes increasingly hotter.

Luminescence is light produced using energy sources other than heat. Sometimes luminescence is called 'cold light', because it can occur at room temperature and cooler temperatures.

Red strontium salts, lithium salts
lithium carbonate, Li₂CO₃ = red
strontium carbonate, SrCO₃ = bright red

Electric White white-hot metal, such as magnesium or aluminum
barium oxide, BaO

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

Fruit Pizza

Fri, 03 Jul 2009 21:57:50 GMT

clipped by: smarieenglish

Clip Source: www.cooks.com

GLAZED FRUIT PIZZA DESSERT

1 roll refrigerated cookie dough

Press onto a greased pizza pan. Bake at 350 degrees for 10 to 12 minutes. Cool.

Blend: 1 (4 1/2 oz.) Cool Whip

Spread mixture over crust. Arrange attractively the fruit listed below on to the top: 1 (8 oz.) can pineapple tidbits, drained 1 (8 oz.) can mandarin oranges 2 bananas, sliced Kiwi (opt.)

GLAZE:

1 c. sugar
1 c. orange juice
4 tbsp. lemon juice
1 tsp. grated orange rind
Dash salt

Tags: fruitpizza

Fireworks

Fri, 03 Jul 2009 21:26:40 GMT

clipped by: smarieenglish
clipper's remarks: my first clipmark

Clip Source: www.newsweek.com

The Year Without Fireworks

With looming economic concerns, should you worry that your Fourth of July will lose its flame? Nah.

In Yonkers, N.Y., it was a tough decision: they could either blast some fireworks into the sky to celebrate American independence … or have some extra money (say, $100,000) to pay the police squad overtime. You can imagine what they chose. In Flint, Mich., the Fourth of July festivities were canceled, then saved by a sponsor, then stalled again when the town realized one week wasn't enough time to prepare.

"You have to keep in mind that this holiday is happening on a Saturday—which hasn't happened since 1998," says M. Philip Butler, a producer for Grucci, in explaining that the fortuitous calendar helped their finances.