From: owner-ammf-digest@smoe.org (alt.music.moxy-fruvous digest) To: ammf-digest@smoe.org Subject: alt.music.moxy-fruvous digest V14 #8044 Reply-To: ammf@fruvous.com Sender: owner-ammf-digest@smoe.org Errors-To: owner-ammf-digest@smoe.org Precedence: bulk alt.music.moxy-fruvous digest Saturday, December 11 2021 Volume 14 : Number 8044 Today's Subjects: ----------------- The most advanced miniature telescope that zooms in for clear, crisp vision. ["Miniature Telescope" Subject: The most advanced miniature telescope that zooms in for clear, crisp vision. The most advanced miniature telescope that zooms in for clear, crisp vision. http://surveywork.us/vmEtvTM_2NcFf3MgpBtk-iIWxxMQaU4a8DKs8aJfAQJ-w_qsfw http://surveywork.us/cduepjkNpfwdzq-ug_RYHNtxDPuWQQn3-jqFdk53MolTcBfY9g ny earlier studies had assumed that lift was generated equally during the two phases of the wingbeat cycle, as is the case of insects of a similar size. This finding shows that hummingbird hovering is similar to, but distinct from, that of hovering insects such as the hawk moth. Further studies using electromyography in hovering rufous hummingbirds showed that muscle strain in the pectoralis major (principal downstroke muscle) was the lowest yet recorded in a flying bird, and the primary upstroke muscle (supracoracoideus) is proportionately larger than in other bird species. Because of their flying technique, these birds no longer have an alula. The giant hummingbird's wings beat as few as 12/sec and the wings of typical hummingbirds beat up to 80/sec. As air density decreases, for example, at higher altitudes, the amount of power a hummingbird must use to hover increases. Hummingbird species adapted for life at higher altitudes, therefore, have larger wings to help offset these negative effects of low air density on lift generation. A slow-motion video has shown how the hummingbirds deal with rain when they are flying. To remove the water from their heads, they shake their heads and bodies, similar to a dog shaking, to shed water. Further, when raindrops collectively may weigh as much as 38% of the bird's body weight, hummingbirds shift their bodies and tails horizontally, beat their wings faster, and reduce their wings' angle of motion when flying in heavy ra ------------------------------ End of alt.music.moxy-fruvous digest V14 #8044 **********************************************