Energizer Battery Corporation, an EPI sponsor, has developed and currently supplies the smart LED lanterns used in EPI systems. This custom-designed lantern has a nickel-metal hydride (NiMH) battery pack capable of providing children's studies with over 40 hours of bright light between recharges. One specific thing that sets the EPI smart LED lanterns apart from other such lanterns is the chip found within each that manages recharging from the large storage battery, as well as power to the LED bulbs. Lighting equivalent to a 25 watt light bulb. The lantern service life is expected to be greater than five years.
Other articles related to "light":
... The CIE color rendering index (CRI) is a method to determine how well a light source's illumination of eight sample patches compares to the illumination provided by a reference source ... and CCT give a numerical estimate of what reference (ideal) light source best approximates a particular artificial light, and what the difference is ...
... than c would contradict the concept of local time (based on synchronization by light signals) and the principle of relativity ... if we could communicate by signals other than those of light, the velocity of propagation of which differed from that of light? If, after having ... with a velocity a million times as great as that of light? However, in 1905 Poincaré calculated that changes in the gravitational field can propagate with the speed of light if it ...
... discovered that the plane of polarisation of linearly polarised light is rotated when the light rays travel along the magnetic field direction in the presence of a transparent dielectric, an effect now ... This was the first evidence that light was related to electromagnetism ... In 1846 he speculated that light might be some form of disturbance propagating along magnetic field lines ...
... taking Argon flash, a single-use source of very short and extremely bright flashes of light Arc flash, an electrical explosion Lightning, a natural phenomenon Muzzle flash ...
Famous quotes containing the word light:
“Haply your eye shall light upon some toy
You have desire to purchase.”
—William Shakespeare (15641616)
“If we will admit time into our thoughts at all, the mythologies, those vestiges of ancient poems, wrecks of poems, so to speak, the worlds inheritance,... these are the materials and hints for a history of the rise and progress of the race; how, from the condition of ants, it arrived at the condition of men, and arts were gradually invented. Let a thousand surmises shed some light on this story.”
—Henry David Thoreau (18171862)
“The splendor falls on castle walls
And snowy summits old in story;
The long light shakes across the lakes,
And the wild cataract leaps in glory.
Blow, bugle, blow, set the wild echoes flying,
Blow, bugle; answer, echoes, dying, dying, dying.”
—Alfred Tennyson (18091892)