My husband' s cardiologist is a facc. We are moving, and when we asked if he knew of a good one in nc, he said the facc would be good to look fot, because they have sat for the test nand keep current. That being said, he also told us some older drs. Have not sat for the test and are better than some facc ones.
Deathwatch beetle. Deathwatch beetle (Xestobium rufovillosum), an anobiid, or borer insect, of the family Anobiidae (insect order Coleoptera) that makes a ticking or clicking sound by bumping its head or jaws against the sides of the tunnels as it bores in old furniture and wood.
16. Some earthquake waves have the low frequency of 0.2 Hz and a speed of 8 km sâ1. What is their wavelength, and how long does one wave cycle take to pass? 17. A bat transmits ultrasonic clicks made of sound of frequency 80 kHz; the clicks have duration of 0.1 ms. The bat increases the clicking rate from about 20 Hz to 2 kHz as it nears its prey. An echo from an unwary moth initially returns after 20 ms.