P and S waves in Earth's mantle and core [edit]. When an earthquake occurs, seismographs near the epicenter are able to record both P and S waves, but those at a greater distance no longer detect the high frequencies of the first S wave.
Best Answer: CONUS COLA is a taxable allowance. There is an additional amount calculated into the figure to compensate for the additional tax burden. OCONUS COLA is non-taxable.
A prescription is not required to qualify for the exemption. The taxability of corrective eyeglasses and contact lenses has not changed. Optometrists, opticians and ophthalmologists must continue to pay tax on the. purchase price of corrective eyeglasses and contact lenses, and the charges. made to their patients are exempt from tax. Durable Medical Equipment.