Home Remedies for Whiter Teeth. Some people still prefer the age-old home remedy of baking soda and a toothbrush to gently whiten teeth at home. Also, some foods such as celery, apples, pears, and carrots trigger lots of saliva, which helps wash away food debris on your teeth.
Roche limit. n. The smallest distance at which a natural satellite can orbit a celestial body without being torn apart by the larger body's gravitational force. The distance depends on the densities of the two bodies and the orbit of the satellite.
The TA for GSM is only a limit until you turn on Extended Cell capabilities, which goes from 31 km (the range for normal GSM) to up to 250 km. CDMA works on code range limitations of the Active set which is +/- 64 chips. with each chip being equal to 256 meters, so +/-16.5 km, or around 33 km.