When Thunderstorms Have Wings
نویسندگان
چکیده
منابع مشابه
Birds have dinosaur wings: The molecular evidence.
Within developmental biology, the digits of the wing of birds are considered on embryological grounds to be digits 2, 3 and 4. In contrast, within paleontology, wing digits are named 1, 2, 3 as a result of phylogenetic analysis of fossil taxa indicating that birds descended from theropod dinosaurs that had lost digits 4 and 5. It has been argued that the development of the wing does not support...
متن کاملWhen a butterfly flaps its wings…
On 20 May, most UK newspapers carried large colour photographs of the monarch butterfly. Some were even bigger than the accompanying reports, with headlines typified by the Daily Mail’s “GM pollen that can mean a cloud of death for butterflies.” The implication was that genetically modified plants in general threaten butterflies in general — even the environment in general. The articles stemmed...
متن کاملWhen wings touch wakes: understanding locomotor force control by wake wing interference in insect wings.
Understanding the fluid dynamics of force control in flying insects requires the exploration of how oscillating wings interact with the surrounding fluid. The production of vorticity and the shedding of vortical structures within the stroke cycle thus depend on two factors: the temporal structure of the flow induced by the wing's own instantaneous motion and the flow components resulting from b...
متن کاملEvolution: Have Wings Come, Gone and Come Again?
Can complex traits be re-evolved by lineages that have lost them? Phylogenetic study now suggests that wings may indeed have reappeared several times within the ancestrally wingless stick insects.
متن کاملConvected Charge in Thunderstorms
The charge transport within thunderclouds by the convective motions of the cloud is examined. I n the presencc of the primary positive dipole, shielding charge distributions are formed within thc lower and upper cloud boundaries as the result of ion conduction from the free air and ion capture by droplets and precipitation in peripheral cloud layers. Cloud droplets positivcly charged by the con...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Eos
سال: 2016
ISSN: 2324-9250
DOI: 10.1029/2016eo054323