The birth of humanity happened in tropical zones, where apples and pears will not grow. Many believe that the "apple" Eve picked from the tree of recognition was either a mango or a papaya. (I suppose the durian would have been too heavy and thorny to seduce Adam). And it seems to me that we are still more adapted to sweet, tropical fruits, than to fruits of colder climates. I tested this theory by offering a ripe mango to my children when they were only one and two days old. As I held it in front of their little noses, their response was to start making suckle movements. When I did the same with an apple, nothing happened. I-Hielscher yiyona ehola umphakeli wamandla aphezulu ekhono lama-ultrasonic, emhlabeni jikelele. Njengoba i-Hielscher yenza amaprosesa ase ultrasonic kuze kube 16kW amandla ngedivayisi eyodwa, nakhu akukho mkhawulo esitshalweni sesitshalo noma ukucubungula amandla. Amaqoqo ezinhlelo ezimbalwa ze-16kW asetshenziselwa ukwakhiwa kwemithamo emikhulu yamafutha ahlaselwa. Ukusebenza kwephethiloli yezohwebo ayidingi amandla amaningi e-ultrasonic. Imfuneko yangempela yamandla inganqunywa isebenzisa iproksi ye-1kW ultrasonic ebangeni lesikhulu. Yonke imiphumela evela ezinhlolweni ezinjalo ze-bench-top ingaba senziwe kalula.