Search results
Results from the WOW.Com Content Network
Generally, the color of a flame may be red, orange, blue, yellow, or white, and is dominated by blackbody radiation from soot and steam. When additional chemicals are added to the fuel burning, their atomic emission spectra can affect the frequencies of visible light radiation emitted - in other words, the flame appears in a different color ...
The high temperature of the flame causes the vaporized fuel molecules to decompose, forming various incomplete combustion products and free radicals, and these products then react with each other and with the oxidizer involved in the reaction of the following flame (fire). One may investigate different parts of a candle flame with the aid of a ...
Floral color change may also be caused by an increase or decrease in pH causing a reddening/blueing of anthocyanins and co-pigments. Floral color change can be inducible or non-inducible. Some flowers will change color at the same rate regardless of pollinator visitation, while others can be induced by pollen deposition on the stigma.
The name is derived from the Ancient Greek word phlox meaning flame in reference to the intense flower colors of some varieties. [2] Fertilized flowers typically produce one relatively large seed. The fruit is a longitudinally dehiscent capsule with three or more valves that sometimes separate explosively. [3]
Flames consist primarily of carbon dioxide, water vapor, oxygen and nitrogen. If hot enough, the gases may become ionized to produce plasma. [2] Depending on the substances alight, and any impurities outside, the color of the flame and the fire's intensity will be different. [3]
A flame test involves introducing a sample of the element or compound to a hot, non-luminous flame and observing the color of the flame that results. [4] The compound can be made into a paste with concentrated hydrochloric acid, as metal halides, being volatile, give better results. [5] Different flames can be tried to verify the accuracy of ...
Different types of colour-breaks depend on the variety of tulip and the strain of the virus. The color variegation is caused either by local fading, or intensification and overaccumulation of pigments in the vacuoles of the upper epidermal layer due to the irregular distribution of anthocyanin ; this fluctuation in pigmentation occurs after the ...
Its blossom is the national flower of St. Kitts and Nevis, [14] and in May 2018 the royal poinciana was adopted by the city of Key West as its official tree. [15] Known locally as semarak api, Delonix regia is the city flower of Sepang, Selangor, Malaysia. [16] In Vietnam, this is a popular urban tree and is called Phượng vỹ, or "phoenix's ...