A special mahogany log. Mahogany trees can make a nice amount of money due to the logs being 583 coins and the planks 2,031 coins each, and two Special mahogany logs are gained at an average of 1 per 50 logs cut.The cost to make Mahogany planks is 1500 coins per log without the special logs. special mahogany log. Mahogany trees can make a nice amount of money due to the logs being 583 coins and the planks 2,031 coins each, and two Special mahogany logs are gained at an average of 1 per 50 logs cut.
Ultrasonic pest repellents seem to work on a variety of different pests. The pest they tackle depend on the type of device with some repelling rats, mice, cockroaches, ants, and spiders and others repelling also squirrels, fleas, bats, etc.
Ultrasonic sound can be produced by transducers which operate either by the piezoelectric effect or the magnetostrictive effect. The magnetostrictive transducers can be used to produce high intensity ultrasonic sound in the 20-40 kHz range for ultrasonic cleaning and other mechanical applications.Ultrasonic medical imaging typically uses much higher ultrasound frequencies in the range 1-20 MHz.he magnetostrictive transducers can be used to produce high intensity ultrasonic sound in the 20-40 kHz range for ultrasonic cleaning and other mechanical applications. Ultrasonic medical imaging typically uses much higher ultrasound frequencies in the range 1-20 MHz.