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  2. Hexafoil - Wikipedia

    en.wikipedia.org/wiki/Hexafoil

    The pattern figure can be drawn by pen and compass, by creating seven interlinking circles of the same diameter touching the previous circle's center. The second circle is centered at any point on the first circle. All following circles are centered on the intersection of two other circles.

  3. Spoke - Wikipedia

    en.wikipedia.org/wiki/Spoke

    High quality bicycles with conventional wheels use spokes of stainless steel, while cheaper bicycles may use galvanized (also called "rustless") or chrome plated spokes. While a good quality spoke is capable of supporting about 225 kgf (c. 500 pounds-force or 2,200 newtons ) of tension, they are used at a fraction of this load to avoid ...

  4. Medicine wheel - Wikipedia

    en.wikipedia.org/wiki/Medicine_wheel

    The wheels can be large, reaching diameters of 75 feet. The most common variation between different wheels are the spokes. There is no set number of spokes for a medicine wheel to have although there are usually 28, the same number of days in a lunar cycle. The spokes within each wheel are rarely evenly spaced, or even all the same length.

  5. Ophanim - Wikipedia

    en.wikipedia.org/wiki/Ophanim

    A traditional depiction of the chariot vision, based on the description in Ezekiel, with an opan on the left side. The ophanim (Hebrew: אוֹפַנִּים ʼōp̄annīm, ' wheels '; singular: אוֹפָן ʼōp̄ān), alternatively spelled auphanim or ofanim, and also called galgalim (Hebrew: גַּלְגַּלִּים galgallīm, ' spheres, wheels, whirlwinds '; singular: גַּלְגַּל ...

  6. Wagon-wheel effect - Wikipedia

    en.wikipedia.org/wiki/Wagon-wheel_effect

    Imagine that the true rotation of a four-spoke wheel is clockwise. [3] The first instance of visibility of the wheel may occur when one spoke is at 12 o'clock. If by the time the next instance of visibility occurs, the spoke previously at 9 o'clock has moved into the 12-o'clock position, then a viewer will perceive the wheel to be stationary.

  7. Bhavacakra - Wikipedia

    en.wikipedia.org/wiki/Bhavacakra

    One half-circle (usually light) shows contented people moving upwards to higher states, possibly to the higher realms. The other half-circle (usually dark) shows people in a miserable state being led downwards to lower states, possibly to the lower realms. These images represent karma, the law of cause and effect. The light half-circle ...

  8. Halo (religious iconography) - Wikipedia

    en.wikipedia.org/wiki/Halo_(religious_iconography)

    In the religious art of Ancient Greece, Ancient Rome, Christianity, Hinduism, and Buddhism (among other religions), sacred persons may be depicted with a halo in the form of a circular glow, or flames in Asian art, around the head or around the whole body—this last form is often called a mandorla.

  9. Ashoka Chakra - Wikipedia

    en.wikipedia.org/wiki/Ashoka_Chakra

    Illustration of the Ashoka Chakra, as depicted on the flag of India. Depiction of a chakravartin, possibly Ashoka, with a 16-spoked wheel (1st century BCE/CE). The Ashoka Chakra (Transl: Ashoka's wheel) is an Indian symbol which is a depiction of the dharmachakra (English: "wheel of dharma").