Start Testing Your Vocabulary (Beginner-Elementary, 850 words) - book in the series «Test Your», which contains 60 different levels of tests on various vocabulary themes.Different types of tests: gap-fills, multiple-choice, crosswords, puzzles, correcting misprints, picture tests, etc. Answers to all tests - at the end of the book.
Headway is a measurement of the distance or time between vehicles in a transit system. The precise definition varies depending on the application, but it is most commonly measured as the distance from the tip of one vehicle to the tip of the next one behind it, expressed as the time it will take for the trailing vehicle to cover that distance.
In physics, particles that cannot be broken down into any other particles are called elementary particles. The term elementary particles also is used more loosely to include some subatomic particles that are composed of other particles. Particles that cannot be broken further are sometimes called fundamental particles to avoid confusion. These fundamental particles provide the basic units that make up all matter and energy in the universe. Scientists and philosophers have sought to identify and study elementary particles since ancient times. ...
The prerequisites for this book are the “standard” first-semester course
in number theory (with incidental elementary algebra) and elementary
calculus. There is no lack of suitable texts for these prerequisites (for
example, An Introduction to the Theory of Numbers, by 1. Niven and H. S.
Zuckerman, John Wiley and Sons, 1960, cari be cited ...
Physical laws should be independent of the position and orientation of the observer. For this reason,
physical laws are vector equations or tensor equations, since both vectors and tensors transform
from one coordinate system to another in such a way that if the law holds in one coordinate system, it
holds in any other coordinate system.
The apparent plural form in English, like the French plural form les mathématiques (and the less commonly used singular derivative la mathématique), goes back to the Latin neuter plural mathematica (Cicero), based on the Greek plural τα μαθηματικά (ta mathēmatiká), used by Aristotle (384–322 BC), and meaning roughly "all things mathematical"; although it is plausible that English borrowed only the adjective mathematic(al) and formed the noun mathematics anew, after the pattern of physics and metaphysics, which were inherited from the Greek.
(BQ) Ebook Problems in mathematical analysis of problems and exercises in mathematical anal ysis covers the maximum requirements of general courses in higher mathematics for higher technical schools. it contains over 3,000 problems sequentially arranged in chapters i to x covering all branches of higher mathematics (with the exception of ana lytical geometry) given in college courses.