back-and-forth

UK
/ˌbæk.əndˈfɔːθ/
US
/ˌbæk.əndˈfɔrθ/

Library

The current surges back and forth on the wire many thousands of times a second. +1
electricity
туда и обратно
В двух противоположных направлениях, снова и снова.
Electricity for Boys
"Electricity for Boys" by James Slough Zerbe is a practical guide written in the early 20th century. This work falls within the category of educational publications aimed at teaching young boys the fundamental concepts and applications of electricity through hands-on experiments. It emphasizes the importance of practical experience and experimentation over theoretical knowledge alone. The beginning of the text introduces the fascinating world of electricity, stressing the value of learning through practical application while experimenting with various tools and techniques. Zerbe explains that electricity can be understood better when boys engage directly with the material rather than through rote memorization of its principles. He lays out the book's fundamental approach to education, which involves experimenting, building, and discovering the principles that govern electrical phenomena. This foundational philosophy sets the stage for the more detailed chapters on specific electrical concepts and devices, reflecting a broader goal of fostering critical thinking and hands-on learning among young readers.
Electricity for Boys
A current which goes back and forth in opposite directions, unlike a direct current which flows continuously in one direction over a wire.
electricity
двигаться туда и обратно
Описывает ток, который многократно движется сначала в одном, а затем в другом направлении.
Electricity for Boys
"Electricity for Boys" by James Slough Zerbe is a practical guide written in the early 20th century. This work falls within the category of educational publications aimed at teaching young boys the fundamental concepts and applications of electricity through hands-on experiments. It emphasizes the importance of practical experience and experimentation over theoretical knowledge alone. The beginning of the text introduces the fascinating world of electricity, stressing the value of learning through practical application while experimenting with various tools and techniques. Zerbe explains that electricity can be understood better when boys engage directly with the material rather than through rote memorization of its principles. He lays out the book's fundamental approach to education, which involves experimenting, building, and discovering the principles that govern electrical phenomena. This foundational philosophy sets the stage for the more detailed chapters on specific electrical concepts and devices, reflecting a broader goal of fostering critical thinking and hands-on learning among young readers.
Electricity for Boys
The motor takes advantage of the back-and-forth movement of the current.
electricity
движение туда и обратно
Движение, чередующееся между двумя противоположными направлениями.
Electricity for Boys
"Electricity for Boys" by James Slough Zerbe is a practical guide written in the early 20th century. This work falls within the category of educational publications aimed at teaching young boys the fundamental concepts and applications of electricity through hands-on experiments. It emphasizes the importance of practical experience and experimentation over theoretical knowledge alone. The beginning of the text introduces the fascinating world of electricity, stressing the value of learning through practical application while experimenting with various tools and techniques. Zerbe explains that electricity can be understood better when boys engage directly with the material rather than through rote memorization of its principles. He lays out the book's fundamental approach to education, which involves experimenting, building, and discovering the principles that govern electrical phenomena. This foundational philosophy sets the stage for the more detailed chapters on specific electrical concepts and devices, reflecting a broader goal of fostering critical thinking and hands-on learning among young readers.
Electricity for Boys
Thus Lancelot drove him back and forth repeatedly in whatever direction he pleased, always stopping before the Queen, his lady, who had kindled the flame which compels him to fix his gaze upon her.
general
взад и вперёд
Повторяющееся движение в одном направлении, а затем в противоположном.
Four Arthurian Romances
"Four Arthurian Romances" by Chrétien de Troyes is a collection of medieval narratives written in the latter part of the 12th century. This work encompasses the stories of four heroes: Erec, Cligés, Yvain, and Lancelot, each exploring the themes of chivalry, romance, and adventure intertwined with the sophisticated ideals of courtly love. The romances reflect the rich tapestry of Arthurian legend, showcasing knights undertaking noble quests and engaging in battles for honor and love. The opening of "Four Arthurian Romances" introduces the tale of Erec and Enide, beginning with King Arthur's court and the announcement of a hunt for the elusive White Stag, which involves a significant and potentially troublesome tradition. Erec, a prominent knight, is drawn into conflict after a dwarf and a knight insult and strike a damsel at the court. Following this assault, Erec seeks to avenge the honor of the lady, embarking on a quest that leads him through various perils and encounters. His journey sets the stage for themes of valor and love as Erec strives to prove himself worthy, ultimately leading to his romantic involvement with Enide and the promise of her marriage. The romance illustrates not just action and adventure, but also explores the emotional and social dynamics of courtly life in a quintessential chivalric manner.
Four Arthurian Romances
Move it back and forth as you would a bolt.
mechanics
двигать его взад и вперёд
Повторно двигать что-либо в противоположных направлениях.
The Extraordinary Adventures of Arsène Lupin, Gentleman-Burglar
"The Extraordinary Adventures of Arsène Lupin, Gentleman-Burglar" by Maurice Leblanc is a collection of stories published in 1907. This debut collection introduces the charming and cunning Arsène Lupin, a master thief who outsmarts police and high society alike. Through nine tales of daring heists, clever disguises, and audacious escapes, Lupin proves himself an unmatched criminal genius. From shipboard robberies to prison breaks, he taunts authorities—including a famous English detective—while stealing priceless treasures with impeccable style and wit.
The Extraordinary Adventures of Arsène Lupin, Gentleman-Burglar