| 11. | American clairvoyant Edgar Cayce advocated use of the violet ray in almost 900 of his " readings ".
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| 12. | For a long time, libraries needed to protect the collection from the damaging ultra-violet rays of the sun.
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| 13. | Companies who manufactured violet ray devices, made many other types of electrical appliances as well, e . g.
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| 14. | A "'violet ray "'is an antique medical appliance used during the early 20th century in the obsolete medical therapy called electrotherapy.
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| 15. | The flowers emerge in the late summer and display purple to violet ray florets and pale or creamy yellow disc florets.
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| 16. | The titanium oxide reacts with ultra violet rays and therefore, due to photocatalytic effect, it absorbs atmospheric pollution in the process.
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| 17. | The inflorescence holds several flower heads containing many white to light violet ray florets around a center of long yellow disc florets.
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| 18. | Each head has 8-13 white to pinkish or light violet ray florets each up to 2 centimeters long, surrounding yellow disc florets.
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| 19. | This helps slow the aging process and serves as a sunblock from ultra-violet rays, which cause the track to crack and break up.
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| 20. | The inflorescence is a solitary flower head with up to 30 or more pale lavender to pale violet rays surrounding a yellow central disk.
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