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.
The fly emerges from the pupa, and its development is complete. Adult flies live between 15 and 30 days. Some female flies can begin laying eggs within a few hours after emerging from the pupa, and others need to be at least 2 days old.Female adult flies lay eggs throughout their lifespan.he Emergence of Maggots. Flies begin as eggs, which look like grains of rice. The eggs hatch between 8 and 20 hours after an adult fly lays them. What emerge from the eggs are larvae, also called maggots.