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Saint Lucia Day. Young girl wears Lucia crown (tinsel halo) with candles. Holds Saint Lucia Day currant laced saffron buns (lussekatter or Lucia's cats). Observed December 13 honor virgin martyr Santa Lucia (St. Lucy). Luciadagen, Christmas, Sweden
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Rural Irish landscape, Sligo, Ireland.
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Thanksgiving Turkey with all the sides
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An ancient egyptian hieroglyphic painted carving showing the falcon headed god Horus seated on a throne and holding a golden fly whisk. Before him are the Pharoah Seti and the goddess Isis. Interior wall of the temple to Osiris at Abydos, Egypt.
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Plato (left) and Aristotle, detail from School of Athens, fresco by Raphael, 1508-11; in the Stanza della Segnatura, the Vatican. Plato points to the heavens and the realm of Forms, Aristotle to the earth and the realm of things.
Plato and Aristotle: How Do They Differ?
Aphrodite. Greek mythology. Sculpture. Aphrodite is the Greek goddess of love and beauty.
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Thanksgiving Celebration Traditional Dinner Setting Food Concept
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rapid sand filter

chemistry

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water supply system treatment

  • São Paulo, Braz.
    In water supply system: Filtration

    …are in use: slow and rapid. Slow filters require much more surface area than rapid filters and are difficult to clean. Most modern water-treatment plants now use rapid dual-media filters following coagulation and sedimentation. A dual-media filter consists of a layer of anthracite coal above a layer of fine sand.…

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