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  2. Lamium purpureum - Wikipedia

    en.wikipedia.org/wiki/Lamium_purpureum

    Lamium purpureum grows with square stems to 5–20 cm [3] (rarely 30 cm) in height. The leaves have fine hairs, are green at the bottom and shade to purplish at the top; they are 2–4 cm long and broad, with a 1–2 cm petiole (leaf stalk), and wavy to serrated margins.

  3. Shades of red - Wikipedia

    en.wikipedia.org/wiki/Shades_of_red

    Red (RGB), RGB red, or electric red [citation needed] (as opposed to pigment red, shown below) is the brightest possible red that can be reproduced on a computer monitor. This color is an approximation of an orangish red spectral color. It is one of the three primary colors of light in the RGB color model, along with green and blue.

  4. Lumen (unit) - Wikipedia

    en.wikipedia.org/wiki/Lumen_(unit)

    The lumen (symbol: lm) is the unit of luminous flux, a measure of the perceived power of visible light emitted by a source, in the International System of Units (SI). ). Luminous flux differs from power (radiant flux) in that radiant flux includes all electromagnetic waves emitted, while luminous flux is weighted according to a model (a "luminosity function") of the human eye's sensitivity to ...

  5. Light-emitting diode - Wikipedia

    en.wikipedia.org/wiki/Light-emitting_diode

    One of the challenges is the development of more efficient green LEDs. The theoretical maximum for green LEDs is 683 lumens per watt but as of 2010 few green LEDs exceed even 100 lumens per watt. The blue and red LEDs approach their theoretical limits. [citation needed] Multicolor LEDs offer a means to form light of different colors.

  6. Red states and blue states - Wikipedia

    en.wikipedia.org/wiki/Red_states_and_blue_states

    Map based on last Senate election in each state as of 2024. Starting with the 2000 United States presidential election, the terms "red state" and "blue state" have referred to US states whose voters vote predominantly for one party—the Republican Party in red states and the Democratic Party in blue states—in presidential and other statewide elections.

  7. Colloidal gold - Wikipedia

    en.wikipedia.org/wiki/Colloidal_gold

    Colloidal gold is a sol or colloidal suspension of nanoparticles of gold in a fluid, usually water. [1] The colloid is coloured usually either wine red (for spherical particles less than 100 nm) or blue-purple (for larger spherical particles or nanorods). [2]

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