A friend in El Salvador would like a phone with an answering machine and caller ID. Do phones purchased in the U.S. work in El Salvador? I did a little research and it appears they use the same caller ID standard, but I know, for example, that phones here meet FCC regulations, and I don't know if there are similar requirements in El Salvador, or different requirements that U.S. phones typically don't meet.
That's because the water absorbs more light thus making it look darker.
Because water has a higher density than air.
Mine's Always Blinking Green, SOmetimes Makes A *Beep* But, Just To Make Sure Check Out The Manual If You Have One, If You Dont.. Type In The Name Of The Model In Google Search For An Online Manual,
The reason is, water absorbs light, and natural fibers absorb water like a sponge. Not only is water being dispersed among the threads of the fabric, but the thread material itself is also absorbing water on a microscopic level (man-made fibers, on the other hand, are often so dense as to be non-absorptive, though very fine man-made fiber can, when tightly woven, exhibit some absorptive properties). So when your cotton t-shirt gets wet, water initially soaks into the fabric and causes the individual thread fibers to swell as their structures are infiltrated and expanded. This expansion yields an increase in the overall volume and density of the fabric, which is now a veritable mixture of water and fibrous material. Water itself is very light-absorptive (notice how large, deep bodies of water always appear dark, regardless of the color of the sky or the geologic bed beneath). And that's the major contributor to the darkening appearance of your cotton t-shirt: the darker shade is the result of fewer light waves being reflected back to the eye. Furthermore, no longer does the reflective surface consist of myriad, tiny thread surfaces. Once wet, the fabric surface becomes a dense expanse of bloated threads (with reduced reflective surface area) infused with a light-absorbing liquid, hence the dramatically darker appearance.
Hi Master (and Krish) Good, quick answer. A simple 'trick ' of the eye and interpretation by the brain. And astute resolution by you.
