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.
1 The pupal stage lasts about 3 weeks. 2  The adult fly emerges from the pupa in the ground after about 30 days. 3  Over a period of 12-14 days it matures, mates and, if it is a female, deposits its first larva. 4  Thus 50 days elapse between the emergence of one female fly and the subsequent emergence of the first of its progeny. Eggs hatch in the female and after larval development, the deposited larvae pupates immediately. 2  The pupal stage lasts about 3 weeks. 3  The adult fly emerges from the pupa in the ground after about 30 days. 4  Over a period of 12-14 days it matures, mates and, if it is a female, deposits its first larva.