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Reflections on the Motive Power of Fire," along with other papers
in this volume, laid the foundation of modern thermodynamics.
Highly readable, "Reflections" contains no arguments that depend on
calculus, consisting mostly of statements couched in exact
language. It represents a tribute to Carnot's capacity to
generalize, and to see fundamental processes at work in complex
mechanisms.
"Reflections on the Motive Power of Fire" examines the relation
between heat and the work done by heat in high- and low-pressure
steam engines, air-engines, and an internal combustion machine.
Carnot established conditions for the economical working of these
engines and invented the closed cycle of operations. He realized
that in any engine, the amount of work done by heat is determined
solely by the range of temperature through which it fell in the
operation. He extended the ideas of his father, Lazare Carnot, on
mechanics to thermal processes, deriving statements on the
impossibility of perpetual motion and the need to avoid
irreversible changes.
Little notice was paid to this book upon its 1824 publication; ten
years later, Emile Clapeyron's more analytical paper on the same
subject received wider attention. This English translation includes
selections from Carnot's posthumous manuscripts and a paper by
Rudolf Clausius that rewrote Carnot's results in a terminology that
distinguished between change of entropy and quantity of heat.
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Princess Batilda (Paperback)
Sharon K Riddle, Nancy I. Sanders; Illustrated by Megan E Mendoza
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R542
R443
Discovery Miles 4 430
Save R99 (18%)
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Ships in 10 - 15 working days
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A topsy-turvy kingdom turns right-side up when Princess Batilda
discovers a priceless treasure. Come and see the delightful things
that can happen to a princess who learns to say, "I'm sorry." Smile
after smile awaits the reader in this picture book, from watching a
princess you can't help love because of all the chaos she causes
throughout the castle, to her "coming of age" when she realizes the
importance of that very special word, "Sorry." Neither the king nor
queen nor princes from nearby kingdoms could teach her that, only
the boy in the background who knew her worth. A darling story, well
worth reading. -Shirley Shibley, contributor to Clubhouse, Bread
for God's Children, and other periodicals. The fun-filled text and
delightful illustrations will help readers of Princess Batilda
understand, in a captivating way, why it's so very important to say
"I'm sorry." The surprise ending is touching. A great gift for a
young child. -Marjorie Flathers, frequent contributor to the Kids'
Reading Room page in the Los Angeles Times and many other
publications Beguiling artwork and a sure-fire plot make Princess
Batilda a winner. Young readers will appreciate this simple story
that tells a not-so-simple truth. -Marilyn Donahue, recipient of
the Chariot Book Award for The Crooked Gate (David C. Cook)
Princess Batilda is always causing havoc in the kingdom but she
refuses to say, "I'm sorry." This delightful tale of the
consequences of never saying you're sorry will charm child and
parent alike. The unexpected twist at the end of the story makes it
even more delightful. -Gloria McQueen Stockstill, author of four
board books including The Basket in the River, To the Town of
Bethlehem, The Blind Man by the Road, and Jesus Rose on Easter
Morn. Princess Batilda is a charming story on the importance of
saying "I'm sorry" and the faithfulness of true friendship. Told
with tenderness, this tale is sure to be a favorite for the little
princesses and princes we cherish so much. -Veronica Walsh,
illustrator for Too Many Visitors for One Little House
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