ʻO ka mana e pili ana i ka nui o ka hana a kekahi mea i loko o kahi manawa, ʻo ia hoʻi, ʻo ka mana ka nui kino e wehewehe ana i ka wikiwiki o ka hana ʻana. Hoʻopaʻa ʻia ka nui o ka hana, ʻoi aku ka pōkole o ka manawa, ʻoi aku ka nui o ka waiwai mana. ʻO ke kumu no ka loaʻa ʻana o ka mana: mana = hana/manawa. Hōʻike ka mana i ka nui kino o ka wikiwiki hana. ʻO ka hana i hana ʻia i loko o kahi manawa i kapa ʻia ka mana a ua hōʻike ʻia e P.
Ka mana kani ultrasonic
I ke kaʻina hana o ka hawewe kani, ke hoʻouna ʻia ka hawewe kani i ke ʻano kuʻuna paʻa mua, e haʻalulu nā ʻāpana waena i hope a i waho kokoke i ke kūlana kaulike, e hōʻemi ana a hoʻonui i ka waena. Hiki ke noʻonoʻo ʻia e hiki i nā hawewe kani ke loaʻa ka ikehu kinetic vibrational a me ka ikehu deformation. ʻO ka ikehu acoustic i loaʻa e ka mea waena ma muli o ka haunaele o ka hawewe kani ka huina o ka ikehu kinetic vibration a me ka ikehu hiki ke hoʻololi.
Me ka hoolaha ana o na hawewe kani ma ke ano me ka hoolaha ana o ka ikehu, ina e lawe kakou i kekahi mea leo li'ili'i (dV) ma ke kahua leo, e lilo ka leo kumu o ka mea kikowaena he Vo, he po ke kaomi, a he ρ0 ka manoanoa. Ka ikehu kinetic o ka mea leo (dV) ma muli o ka hawewe hawewe kani △Ek; △Ek=(ρ0 Vo)u2 /2
△Ek ka ikehu kinetic, J; u ka velocity particle, m/s; ʻO ka ρ0 ka haʻahaʻa haʻahaʻa, kg / m3; ʻO Vo ka leo kumu, m3.
ʻO kahi hiʻohiʻona nui o ka ultrasound kona mana. ʻOi aku ka mana o Superwave ma mua o nā hawewe kani maʻamau. ʻO kēia kekahi o nā kumu koʻikoʻi e hiki ai ke hoʻohana nui ʻia ka ultrasound ma nā kahua he nui.
Ke hōʻea nā hawewe kani ultrasonic i kekahi ʻano, ua haʻalulu nā molekala o ka mea waena ma muli o ka hana a nā hawewe kani ultrasonic, a ua like ke alapine vibration me ka alapine o nā hawewe kani ultrasonic. ʻO ke alapine o ka haʻalulu o nā molekala waena e hoʻoholo i ka wikiwiki o ka haʻalulu. ʻO ke kiʻekiʻe o ke alapine, ʻoi aku ka nui o ka wikiwiki. Ma waho aʻe o ka nuipaʻa o ka mole waena, ʻo ka ikehu i loaʻa i ka vibration o ka mole waena e like pū me ka square o ka wikiwiki vibration o ka mole medium. No laila, ʻoi aku ka kiʻekiʻe o ke alapine o nā hawewe kani ultrasonic, ʻoi aku ka kiʻekiʻe o ka ikehu i loaʻa i nā molekala waena. ʻOi aku ka kiʻekiʻe o ke alapine o nā hawewe kani ultrasonic ma mua o ke alapine o nā hawewe kani maʻamau, no laila hiki i nā hawewe kani ultrasonic ke hoʻoikaika i nā molekala waena, akā liʻiliʻi loa ka hopena o nā hawewe kani maʻamau. I nā huaʻōlelo ʻē aʻe, ʻoi aku ka ikaika o ka ultrasound ma mua o nā hawewe kani, a hiki ke hāʻawi i ka ikehu i nā molekole waena.
