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2. Rope light - Wikipedia

   en.wikipedia.org/wiki/Rope_light

   A length of illuminated rope light. A rope light is primarily used as a decorative lighting fixture, featuring small lights linked together and encased in a PVC jacket to create a string of lights. Rope lights can be used in many applications both indoors and outdoors. [1] Used in place of neon signs, it is sometimes called soft neon.

3. Neon lamp - Wikipedia

   en.wikipedia.org/wiki/Neon_lamp

   A General Electric NE-34 glow lamp, manufactured circa 1930. Neon was discovered in 1898 by William Ramsay and Morris Travers.The characteristic, brilliant red color that is emitted by gaseous neon when excited electrically was noted immediately; Travers later wrote, "the blaze of crimson light from the tube told its own story and was a sight to dwell upon and never forget."

4. Neon lighting - Wikipedia

   en.wikipedia.org/wiki/Neon_lighting

   The term can also refer to the miniature neon glow lamp, developed in 1917, about seven years after neon tube lighting. [1] While neon tube lights are typically meters long, the neon lamps can be less than one centimeter in length and glow much more dimly than the tube lights. They are still in use as small indicator lights.

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   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

6. Xenon - Wikipedia

   en.wikipedia.org/wiki/Xenon

   Because of its scarcity, xenon is much more expensive than the lighter noble gases—approximate prices for the purchase of small quantities in Europe in 1999 were 10 €/L (=~€1.7/g) for xenon, 1 €/L (=~€0.27/g) for krypton, and 0.20 €/L (=~€0.22/g) for neon, [67] while the much more plentiful argon, which makes up over 1% by volume ...

7. Helium–neon laser - Wikipedia

   en.wikipedia.org/wiki/Helium–neon_laser

   Helium–neon laser at the University of Chemnitz, Germany. A helium–neon laser or He–Ne laser is a type of gas laser whose high energetic gain medium consists of a mixture of helium and neon (ratio between 5:1 and 20:1) at a total pressure of approximately 1 Torr (133 Pa) inside a small electrical discharge.