NightStar Flashlight Physics Guide
NightStar Flashlight Physics Guide provides wonderful insight into the world of physics. So how does magnetism, energy storage, light refraction all come together to make flashlight technology work?
Through the lessons presented in the NightStar Physics Guide you will develop an understanding of the Principles of Newtonian Relativity, Faraday’s Law of Electromagnetic Induction, Snell’s Law of Refraction and Fermat’s Principle of Least Time.
Educators across the country demonstrate these principals by taking the lessons presented in the physics guide, and using Shake Light 40 Flashlight as a demonstration tool, and present in a clear and concise presentation the world of physics that surround us.
The Physics Behind the NightStar Shake Flashlight
The NightStar Flashlight Physics Guide offers a comprehensive presentation that includes calculations and diagrams describing the engineering elements integrated into the NightStar capacitor powered shake flashlight. Understand how magnetism, electrodynamics, energy, light and optics all come together to make a rechargeable flashlight that operates maintenance free for years. The NightStar Physics Guide is written for high school level students; although, much of the material can be understood by 9th graders and up.
NightStar Flashlight Physics Guide Snippet
Many of the components and mechanisms of the NightStar flashlight aptly demonstrate the importance of physics principles. The repulsion of the mobile magnet by the two fixed end magnets illustrates ferromagnetism. The generation of alternating electric current in the coil by the moving magnet demonstrates magnetomotive induction.
The alternating electric current is converted to a direct, or unidirectional, current by diode rectification. This energy is then conveniently saved for later use by capacitive energy storage. The energy carried in the electric current is converted to blue light by radiative recombination in the light-emitting diode. The phosphor converts some of the blue into other colors, illustrating fluorescence. Finally, the white light streaming in all directions is collected and projected forward into a useful beam by the reflector and lens demonstrating reflection and refraction, respectively.