Testing a 150-year-old Hydrodynamics Prediction

نویسندگان

چکیده

A new experiment finds that a sphere with “fins” maintains its orientation in flowing fluid, despite 19th century prediction it would spin.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Are fundamental niches larger than the realized? Testing a 50-year-old prediction by Hutchinson

For more than 50 years ecological niches have been defined as combinations of multidimensional environmental conditions permitting a species to survive and reproduce. A fundamental niche (NF) is defined as the set of conditions within which a species can live in the absence of competitors, and a realized niche (NR) is a NF hypothetically reduced by competitive interactions (and some other limit...

متن کامل

What's in a frog stomach? Solving a 150-year-old mystery (Diptera: Calliphoridae)

The nominal taxon Acanthosoma chrysalis Mayer, 1844 is revised, and a lectotype is designated. The species, which was described from Germany from a number of alleged parasites encysted in the peritoneal wall of the stomach of edible frogs, is shown to be based on first instar larvae of blow flies (Calliphoridae). Argued from the shape and configuration of mouthhooks and abdominal cuticular spin...

متن کامل

A new glimpse on Mesozoic zooplankton—150 million-year-old lobster larvae

Larvae of malacostracan crustaceans represent a large fraction of modern day zooplankton. Plankton is not only a major part of the modern marine ecosystem, but must have played an important role in the ecosystems of the past as well. Unfortunately, our knowledge about plankton composition of the past is still quite limited. As an important part of today's zooplankton, malacostracan larvae are s...

متن کامل

A 150 year-old mystery solved: Transfer of the rheophytic endemic liverwort Myriocolea irrorata to Colura

Myriocolea irrorata is an endemic rheophytic liverwort known from a few localities in the Eastern Andes of Ecuador. Morphologically it belongs to the Cololejeunea-Tuyamaella clade of Lejeuneaceae, however, due to its exclusively Radula-type branching, transversely inserted, hollow leaves, large size, and an extremely high number of clustered gynoecia it has often been regarded as an isolated el...

متن کامل

Hypereosinophilia in a three-year-old child: case report

Background: Hypereosinophilic syndrome is commonly found in various diseases such as allergic diseases, parasitic diseases, malignancies, etc. Fasciolosis may present with different clinical features, and it can make a difficult diagnosis of the disease. Laboratory manifestations of fascioliasis are eosinophilia. The purpose of this report was to introduce a child with hypereosinophilia that he...

متن کامل

ذخیره 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: Physics

سال: 2021

ISSN: ['2624-8174']

DOI: https://doi.org/10.1103/physics.14.s89