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In a reactive dye, a chromophore (an atom or group whose presence is responsible for the colour of a compound) contains a substituent that reacts with the substrate. Reactive dyes have good fastness properties owing to the covalent bonding that occurs during dyeing.
Red/black box. The red/black concept, sometimes called the red–black architecture [1] or red/black engineering, [2] [3] refers to the careful segregation in cryptographic systems of signals that contain sensitive or classified plaintext information (red signals) from those that carry encrypted information, or ciphertext (black signals).
"Last Night I Had the Strangest Dream" was initially composed by McCurdy during the spring of 1950, during a period in time in which there was an ever-looming threat of war, with a big Red Scare being spread by politicians such as Joseph McCarthy.
In color theory, a shade is a pure color mixed with black. It decreases its lightness while nearly conserving its chromaticity. Strictly speaking, a "shade of black" is always a pure black itself and a "tint of black" would be a neutral gray. In practice, many off-black colors possess a hue and a colorfulness (also called saturation).
Fluorescein is an organic compound and dye based on the xanthene tricyclic structural motif, formally belonging to triarylmethine dyes family. It is available as a dark orange/red powder slightly soluble in water and alcohol.
"Fade to Black" is a song and the first power ballad by the American heavy metal band Metallica, released as the first promotional single from their second studio album, Ride the Lightning (1984). The song was ranked as having the 24th best guitar solo ever by Guitar World readers.
Black sands and gold in sluicebox, Blue Ribbon Mine, Alaska Magnet for separation of black sand by hand. Black sands are used by miners and prospectors to indicate the presence of a placer formation. Placer mining activities produce a concentrate that is composed mostly of black sand
"Death Bed (Coffee for Your Head)" (stylized in all lowercase) [1] is a song by Canadian rapper and singer Powfu featuring Filipino-English singer-songwriter Beabadoobee. The song was initially uploaded to SoundCloud and YouTube [ 1 ] in 2019; after Powfu signed with Columbia Records and Robots + Humans, the song was released on streaming ...