The Fifth Force, the Sixth Force and the Spring Force
نویسندگان
چکیده
منابع مشابه
Fifth Force from Fifth Dimension
Using a novel coordinate system, we rederive the eld equations and equations of motion for 5-dimensional relativity in the general case where the metric can depend on all 5 coordinates (i.e., Kaluza-Klein theory without the cylinder restriction). We show that in general the fth dimension produces a new dynamical force in 4-dimensional spacetime. This timelike fth force is proportional to the 4-...
متن کاملطراحی سکونیرو (force plate)
تجزیه و تحلیل گیت (gait analysis)عبارت است از تحقیق روی راه رفتن از نظر حرکت اندامها می باشد، در این بررسی می توان مواردی نظیر کنترل موقعیت، سینتیک و سینماتیک بدن ، کنترل بدن و کنترل عصبی را در نظر داشت. اینگونه تحقیقات در ارتوپدی ، بیومکانیک ورزش و عصب شناسی و کاربرد دارند. پارامترهای مهم در اینگونه تحقیقات عبارت از نیرو ، ممان ، سرعت ، مصرف انرژی و فشار کف پا می باشند. سه روش برای اندازه ...
15 صفحه اولTen Years of the Fifth Force
The suggestion in 1986 of a possible gravity-like “fifth” fundamental force renewed interest in the question of whether new macroscopic forces are present in nature. Such forces are predicted in many theories which unify gravity with the other known forces, and their presence can be detected by searching for apparent deviations from the predictions of Newtonian gravity. We review the phenomenol...
متن کاملForce of an actin spring.
Cellular movements are produced by forces. Typically, cytoskeletal proteins such as microtubules and actin filaments generate forces via polymerization or in conjunction with molecular motors. However, the fertilization of a Limulus polyphemus egg involves a third type of actin-based cellular engine--a biological spring. During the acrosome reaction, a 60-microm long coiled and twisted bundle o...
متن کاملInvestigating Hortatory Force In The EFL Reading Passages
This study investigates some the reading passages in terms of hortatory messages. To this end a methodology based on Critical Discourse Analysis was adopted. The reading texts from ELT textbooks were examined through a model which drew on Fairclough's approach to CDA, specifically (Fairclough, 2003) in which three characteristic features of hortatory texts are introduced. The analysis reveals t...
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: Applied Physics Research
سال: 2012
ISSN: 1916-9647,1916-9639
DOI: 10.5539/apr.v4n2p229