A Van de Graaff can thus be used to accelerate particles up to reasonably high energies: moving an electron through 1 V gains it an energy of 1 eV, so energies of over 20 MeV are achievable by this method (and more if accelerating nuclei with greater than a single electron charge).
They locate females by listening for the sounds of their wings, which run about 250-500 beats per minute. The mosquitoes join, and the males pass sperm to the females, perpetuating the mosquito life cycle. Once their job is done, male mosquitoes live three to five days. The females tend to mate only once, but live considerably longer, depending on how much warmth and moisture is in their environment.
Incubation may last 4 to 4.5 days, but hatching usually occurs in less than 24 hours when conditions are warm and humid. Depending on temperature and the substrate upon which they are feeding, maggots usually complete development in 4 to 10 days.At the end of this period, larvae typically burrow in the upper centimeters of the soil and pupate for up to a week. Adult flies emerge from puparia and make their way to the soil surface.upa -- Blow fly pupa are encased in light brown to black puparia (the tough, hardened skins of last instar larvae). Each puparium is 9 to 10 mm long and 3 to 4 mm wide.