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2. Lightbulb socket - Wikipedia

   en.wikipedia.org/wiki/Lightbulb_socket

   Lightbulb socket. A lightbulb socket, lightbulb holder, light socket, lamp socket or lamp holder is a device which mechanically supports and provides electrical connections for a compatible electric lamp base. [1] Sockets allow lamps to be safely and conveniently replaced (re-lamping). There are many different standards for lampholders ...

3. Insect trap - Wikipedia

   en.wikipedia.org/wiki/Insect_trap

   Light traps are widely used to survey nocturnal moths. Total species richness and abundance of trapped moths may be influenced by several factors such as night temperature, humidity and lamp type. Grasshoppers and some beetles are attracted to lights at a long range but are repelled by it at short range. Farrow's light trap has a large base so ...

4. Bug zapper - Wikipedia

   en.wikipedia.org/wiki/Bug_zapper

   An outdoor bug zapper. A bug zapper, more formally called an electrical discharge insect control system, electric insect killer or (insect) electrocutor trap, is a device that attracts and kills flying insects that are attracted by light. A light source attracts insects to an electrical grid, where they are electrocuted by touching two wires ...

5. Photuris pensylvanica - Wikipedia

   en.wikipedia.org/wiki/Photuris_pensylvanica

   Description. P. pensylvanica is a somewhat flattened beetle 11 millimetres (0.43 in) to 15 millimetres (0.59 in) in length. [6] Its primary color is black, but it has two bright red eyespots on its thorax, as well as yellow edging on its thorax and wing cases and usually a lengthwise yellow stripe partway down the center of each of the latter.

6. Mercury-vapor lamp - Wikipedia

   en.wikipedia.org/wiki/Mercury-vapor_lamp

   Mercury-vapor lamp. A 175- watt mercury-vapor light approximately 15 seconds after starting. A closeup of a 175- W mercury vapor lamp. The small diagonal cylinder at the bottom of the arc tube is a resistor which supplies current to the starter electrode. A mercury-vapor lamp is a gas-discharge lamp that uses an electric arc through vaporized ...

7. Phototaxis - Wikipedia

   en.wikipedia.org/wiki/Phototaxis

   Phototaxis. Distribution of three-dimensional phototaxisin the tree of eukaryotes [1] Red arrows indicate the likely point of origin of phototaxis in a given group. Question marks indicate uncertainties regarding independent or common origin. Phototaxis is a kind of taxis, or locomotory movement, that occurs when a whole organism moves towards ...