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SciWorks has new exhibit space focusing on the cranks, levers and lasers that are behind the basic science of physics.
In the new PhysicsWorks, displays are grouped by concept into mechanics, light and color, electricity, motion and perception.
The beginning of the exhibit starts with simple displays of levers, gears and pulleys, then moves on to flashier kiosks for electricity and lasers. Sanford explains, "Not everybody is going to be a scientist, but everybody is going to have to deal with it at some point."
They include a room that captures a photo of your shadow on photosensitive material with an LED flashing light and a game that shows off the focused intensity of lasers.
There are also displays
that are more like low-impact rides, such as a kid-size gyroscope,
where you sit on a bicycle seat, and holding a spinning wheel by its
axle, you turn around. That's the same concept used in the space and
air industry to keep shuttles and planes straight, Sanford said.
<a href="http://www2.journalnow.com/content/2008/jun/28/physics-area-at-sciworks-is-expanded-and-updated/?entertainment">READ MORE</a>
Light emitting diodes (LED) has number of applications. They include devices, medical appliances, indicators and signs, emergency vehicles, flash lights etc.
Devices, medical applications, clothing, toys
• Remote controls, such as for TVs and VCRs, often use infrared LEDs.
• Glowlights, as a more expensive but longer lasting and reusable alternative to Glowsticks.
• Movement sensors, for example in optical computer mice
• The Nintendo Wii's sensor bar uses infrared LEDs.
In optical fiber and Free Space Optics communications.
Toys and recreational sporting goods, such as the Flashflight
Lumalive, a photonic textile
In pulse oximeters for measuring oxygen saturation
LED phototherapy for acne using blue or red LEDs has been proven to significantly reduce acne over a three-month period.
Some flatbed scanners use an array of red, green, and blue LEDs rather than the typical cold-cathode fluorescent lamp as the light source. Having independent control of three illuminated colors allows the scanner to calibrate itself for more accurate color balance, and there is no need for warm-up.
Computers, for hard drive activity and power on. Some custom computers feature LED accent lighting to draw attention to a given component. Many computer manufacturers use LEDs to tell the user its current state. One example would be the Mac, which tells its user when it is asleep by fading the LED activity lights in and out, in and out.
Sterilization of water and other substances using UV light.
