Flashlights: Difference between revisions
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=Introduction= | =Introduction= | ||
A flashlight, (US) torch, or torchlight (UK) is a portable hand-held electric light. Formerly, the light source typically was a miniature incandescent light bulb but these have been displaced by light-emitting diodes (LEDs) since the mid-2000s. A typical flashlight consists of the light source mounted in a reflector, a transparent cover (sometimes combined with a lens) to protect the light source and reflector, a battery, and a switch, all enclosed in a case. | |||
=Challenges= | =Challenges= | ||
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=References= | =References= | ||
* [https://www.thingiverse.com/thing:943252 LED Headlamp] - nice reuse of bandana / handkerchief, upgrade to 18650 + recharging | * [https://www.thingiverse.com/thing:943252 LED Headlamp] - nice reuse of bandana / handkerchief, upgrade to 18650 + recharging | ||
* [https://en.wikipedia.org/wiki/Flashlight Wikipedia: Flashlight] | |||
Revision as of 00:03, 15 June 2021
Project: Flashlights
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Introduction
A flashlight, (US) torch, or torchlight (UK) is a portable hand-held electric light. Formerly, the light source typically was a miniature incandescent light bulb but these have been displaced by light-emitting diodes (LEDs) since the mid-2000s. A typical flashlight consists of the light source mounted in a reflector, a transparent cover (sometimes combined with a lens) to protect the light source and reflector, a battery, and a switch, all enclosed in a case.
Challenges
Working without light or even without enough light can present serious challenges.
Approaches
LEDs make efficient use of power from batteries for production of light.
References
- LED Headlamp - nice reuse of bandana / handkerchief, upgrade to 18650 + recharging
- Wikipedia: Flashlight
