Simba (Power in English) zvinoreva kuti chinhu chinobata basa rakawanda sei muchikamu chenguva, kureva kuti simba ihuwandu hwemuviri hunotsanangura kuti basa rinoitwa nekukurumidza sei. Kuwanda kwebasa kunogadziriswa, iyo ipfupi nguva, iyo yakakura kukosha kwesimba. Nzira yekuwana simba ndeye: simba = basa / nguva. Simba rinoratidza huwandu hwemuviri hwekumhanya kwebasa. Basa rinoitwa muchikamu chenguva rinonzi simba uye rinoratidzwa naP.
Ultrasonic simba
Mukati mekufamba kwemasaisai eruzha, kana masaisai eruzha achifambiswa kune yakambomira svikiro, zvimedu zvepakati zvinozunguzika zvichidzoka nekudzoka pedyo nenzvimbo yakaenzana, zvichikonzera kudzvanya nekuwedzera mukati. Zvinogona kutariswa kuti masaisai anonzwika anogonesa iyo yepakati kuwana vibrational kinetic simba uye deformation inogona kuita simba. Iyo acoustic simba rinowanikwa nepakati nekuda kwekukanganiswa kwemafungu eruzha ihuwandu hwekuzunguza kinetic simba uye deformation inogona simba.
Sezvo kuparadzirwa kwemasaisai eruzha mukati kuchiperekedzwa nekuparadzirwa kwesimba, kana tikatora chidimbu chidiki chevhoriyamu (dV) mundima yekurira, rega vhoriyamu yepakati ive Vo, kudzvanywa kuve po, uye density kuve ρ0. Iyo kinetic simba reiyo vhoriyamu element (dV) nekuda kweizwi wave vibration △Ek; △Ek=(ρ0 Vo)u2 /2
△Ek isimba rekinetic, J; u is particle velocity, m/s; ρ0 iri pakati nepakati, kg/m3; Vo ivhoriyamu yepakutanga, m3.
Chinhu chakakosha che ultrasound isimba rayo. Superwave ine simba rakawanda kudarika masaisai eruzha akajairwa. Ichi ndicho chimwe chezvikonzero zvakakosha nei ultrasound inogona kushandiswa zvakanyanya muminda yakawanda.
Kana mafungu e ultrasonic asvika kune imwe svikiro, mamorekuru epakati anodedera nekuda kwekuita kwemafungu e ultrasonic, uye iyo vibration frequency yakafanana neiyo frequency yemafungu e ultrasonic. Kuwanda kwekuzunguzika kwemamorekuru epakati kunotaridza kumhanya kwevibration. Iyo yakakwirira frequency, iyo yakakura kukurumidza. Pamusoro pehuremu hwepakati molecule, simba rinowanikwa nekuzunguza kwepakati molecule rinoenzanawo neskweya yekuzunguza kumhanya kwepakati molecule. Naizvozvo, iyo yakakwirira kuwanda kwemafungu e ultrasonic, iyo yakakwirira simba rinowanikwa nepakati mamorekuru. Kuwanda kwemafungu e ultrasonic akakwira zvakanyanya kupfuura kuwanda kwemafungu akajairwa eruzha, saka mafungu e ultrasonic anogona kuita kuti mamorekuru epakati awane simba rakawanda, asi mhedzisiro yemasaisai eruzha pane epakati mamorekuru idiki kwazvo. Mune mamwe mazwi, ultrasound ine simba rakawanda kupfuura masaisai eruzha, uye inogona kupa simba rakakwana kumamorekuru epakati.
