Technology
A projection clock usually needs a backlight like an incandescent bulbs or LEDs.
There are low-brightness and high-brightness clocks. While the projection created by low-brightness clocks can be viewed only in a darkened room, high-brightness ones can also be viewed at daylight or in illuminated indoor places.
Read more about this topic: Projection Clock
Famous quotes containing the word technology:
“If we had a reliable way to label our toys good and bad, it would be easy to regulate technology wisely. But we can rarely see far enough ahead to know which road leads to damnation. Whoever concerns himself with big technology, either to push it forward or to stop it, is gambling in human lives.”
—Freeman Dyson (b. 1923)
“Primitive peoples tried to annul death by portraying the human body—we do it by finding substitutes for the human body. Technology instead of mysticism!”
—Max Frisch (1911–1991)
“One can prove or refute anything at all with words. Soon people will perfect language technology to such an extent that they’ll be proving with mathematical precision that twice two is seven.”
—Anton Pavlovich Chekhov (1860–1904)