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  2. Tired light - Wikipedia

    en.wikipedia.org/wiki/Tired_light

    Tired light is a class of hypothetical redshift mechanisms that was proposed as an alternative explanation for the redshift-distance relationship. These models have been proposed as alternatives to the models that involve the expansion of the universe .

  3. Argand lamp - Wikipedia

    en.wikipedia.org/wiki/Argand_lamp

    The Argand lamp was introduced to Thomas Jefferson in Paris in 1784 and according to him gave off "a light equal to six or eight candles." [ 4 ] These new lamps, much more complex and costly than the previous primitive oil lamps, were first adopted by the wealthy, but soon spread to the middle classes and eventually the less well-off as well.

  4. Light tube - Wikipedia

    en.wikipedia.org/wiki/Light_tube

    The transmitted light varies over the day; should this not be desired, light tubes can be combined with artificial light in a hybrid set-up. [ 27 ] [ 44 ] [ 45 ] [ 46 ] Some artificial light sources are marketed which have a spectrum similar to that of sunlight, at least in the human visible spectrum range, [ 47 ] [ 48 ] [ 49 ] as well as low ...

  5. Tolman surface brightness test - Wikipedia

    en.wikipedia.org/wiki/Tolman_surface_brightness_test

    Tired light hypothesis vs. expanding universe. The Tolman surface brightness test is one out of six cosmological tests that were conceived in the 1930s to check the viability of and compare new cosmological models. Tolman's test compares the surface brightness of galaxies as a function of their redshift (measured as z).

  6. Kerosene lamp - Wikipedia

    en.wikipedia.org/wiki/Kerosene_lamp

    The wick rides in between the inner and outer wick tubes; the inner wick tube (central draft tube) provides the "central draft" or draft that supplies air to the flame spreader. When the lamp is lit, the central draft tube supplies air to the flame spreader that spreads out the flame into a ring of fire and allows the lamp to burn cleanly.

  7. Credit Card 'Swipe' Fees Could Cost Shoppers Over $20 ... - AOL

    www.aol.com/credit-card-swipe-fees-could...

    It's Higher This Year. If you think swipe fees dropped with inflation, guess again. Last year they were $18.6 billion. Since 85% of holiday purchases will be made with credit or debit cards, that ...

  8. Light ergonomics - Wikipedia

    en.wikipedia.org/wiki/Light_ergonomics

    Light ergonomics is the relationship between the light source and the individual. [1] Poor light can be divided into the following: Individual or socio-cultural ...

  9. You can get brand new Stanley colors as part of the new ...

    www.aol.com/lifestyle/you-can-get-brand-new...

    And this week it's dropping a Winter Wonderland collection at Dick's Sporting Goods on Nov. 1, featuring seasonally sparkling colors including bright purple, light blue and hot pink.