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THE Christmas Lectures at the Royal Institution are, by a time-honoured custom, invariably addressed to a juvenile audience. This term, however, has always been held to be an elastic one, and to include those who are young in spirit as well as those who are young in years. The conditions, therefore, necessarily impose on the Lecturer the duty of treating some subject in such a manner that, whilst not beyond the reach of youthful minds, it may yet possess some elements of interest for those of maturer years. A subject which admits of abundant experimental illustrations is accordingly, on these occasions, a popular one, particularly if it has a bearing upon topics then attracting public attention.
The progress of practical invention or discovery often removes at one stroke some fact or principle out of the region of purely scientific investigation, and places it within the purview of the popular mind. A demand then arises for explanations which shall dovetail it on to the ordinary experiences of life. The practical use of ther waves in wireless telegraphy has thus made the subject of waves in general an interesting one. Hence, when permitted the privilege, for a second time, of addressing Christmas audiences in the Royal Institution, the author ventured to indulge the hope that an experimental treatment of the subject of Waves and Ripples in various media would not be wanting in interest.
Although such lectures, when reproduced in print, are destitute of the attractions furnished by successful experiments, yet, in response to the wish of many correspondents, they have been committed to writing, in the hope that the explanations given may still be useful to a circle of readers. The author trusts that the attempt to make the operations of visible waves a key to a comprehension of some of the effects produced by waves of an invisible kind may not be altogether without success, and that those who find some of the imperfect expositions in this little book in any degree helpful may thereby be impelled to study the facts more closely from that open page of Nature which lies ever unfolded for the instruction of those who have the patience and power to read it aright.
J. A. F.
UNIVERSITY COLLEGE,
LONDON, 1902.
Since she started Taft Middle School two years ago, Sam Gold has been looking forward to eighth-grade science with Mrs. Cooper and the coveted position of lab tech. But she hadn't counted on her nemesis Kimberly Newhouse getting in the way, and the missing uranium that could put her whole school on lockdown if she doesn't find it.
Sam Gold and the Case of the Missing Uranium is a fiction chapter book for upper elementary, middle school readers with high school level
science explained in the simplest of terms.
Included are 25+ Science Activities you can do at home!
THE Christmas Lectures at the Royal Institution are, by a time-honoured custom, invariably addressed to a juvenile audience. This term, however, has always been held to be an elastic one, and to include those who are young in spirit as well as those who are young in years. The conditions, therefore, necessarily impose on the Lecturer the duty of treating some subject in such a manner that, whilst not beyond the reach of youthful minds, it may yet possess some elements of interest for those of maturer years. A subject which admits of abundant experimental illustrations is accordingly, on these occasions, a popular one, particularly if it has a bearing upon topics then attracting public attention.
The progress of practical invention or discovery often removes at one stroke some fact or principle out of the region of purely scientific investigation, and places it within the purview of the popular mind. A demand then arises for explanations which shall dovetail it on to the ordinary experiences of life. The practical use of ther waves in wireless telegraphy has thus made the subject of waves in general an interesting one. Hence, when permitted the privilege, for a second time, of addressing Christmas audiences in the Royal Institution, the author ventured to indulge the hope that an experimental treatment of the subject of Waves and Ripples in various media would not be wanting in interest.
Although such lectures, when reproduced in print, are destitute of the attractions furnished by successful experiments, yet, in response to the wish of many correspondents, they have been committed to writing, in the hope that the explanations given may still be useful to a circle of readers. The author trusts that the attempt to make the operations of visible waves a key to a comprehension of some of the effects produced by waves of an invisible kind may not be altogether without success, and that those who find some of the imperfect expositions in this little book in any degree helpful may thereby be impelled to study the facts more closely from that open page of Nature which lies ever unfolded for the instruction of those who have the patience and power to read it aright.
J. A. F.
UNIVERSITY COLLEGE,
LONDON, 1902.
Mechanics for fun is not a textbook. Instead it is a complementary book with some entertaining experiments and descriptions of some exciting natural phenomena. Its aim is to excite the reader interest in mechanics and have him engage in its study. The author has included a number of mechanics' applications in engineering, sports, circus performances and many other unexpected areas.
THE Christmas Lectures at the Royal Institution are, by a time-honoured custom, invariably addressed to a juvenile audience. This term, however, has always been held to be an elastic one, and to include those who are young in spirit as well as those who are young in years. The conditions, therefore, necessarily impose on the Lecturer the duty of treating some subject in such a manner that, whilst not beyond the reach of youthful minds, it may yet possess some elements of interest for those of maturer years. A subject which admits of abundant experimental illustrations is accordingly, on these occasions, a popular one, particularly if it has a bearing upon topics then attracting public attention.
The progress of practical invention or discovery often removes at one stroke some fact or principle out of the region of purely scientific investigation, and places it within the purview of the popular mind. A demand then arises for explanations which shall dovetail it on to the ordinary experiences of life. The practical use of ther waves in wireless telegraphy has thus made the subject of waves in general an interesting one. Hence, when permitted the privilege, for a second time, of addressing Christmas audiences in the Royal Institution, the author ventured to indulge the hope that an experimental treatment of the subject of Waves and Ripples in various media would not be wanting in interest.
Although such lectures, when reproduced in print, are destitute of the attractions furnished by successful experiments, yet, in response to the wish of many correspondents, they have been committed to writing, in the hope that the explanations given may still be useful to a circle of readers. The author trusts that the attempt to make the operations of visible waves a key to a comprehension of some of the effects produced by waves of an invisible kind may not be altogether without success, and that those who find some of the imperfect expositions in this little book in any degree helpful may thereby be impelled to study the facts more closely from that open page of Nature which lies ever unfolded for the instruction of those who have the patience and power to read it aright.
J. A. F.
UNIVERSITY COLLEGE,
LONDON, 1902.
The ingenious and entertaining experiments described by Tom Tit in his La science Amusante have long delighted the young people of France. These experiments can now delight English speaking pupils and students with this updated translation. Many of the physics and mathematics experiments described here are simple pastimes meant for the recreation of young and old, assembled around the family table. Others, on the contrary, being of a really scientific character, are designed to introduce the reader to the study of Physics and mathematics. Regardless of their nature, all the experiments can be carried out without any special apparatus and are consequently without the least expense. Instruments used include kitchen utensils, corks, matches, glasses, and plates. The book is very useful for the young physicist who wishes to entertain his friends. It will show him not only how to do things by which he can render himself more entertaining than the best talker or the best joker in the company, but will reveal to him a hundred things by which he can amuse and astonish everybody he knows. The book is equally useful for the teacher who wishes to create in his students an interest in science. It will enable him to illustrate scientific principles, and render his instructions as interesting as an Arabian tale.
The book gives adults ideas for activities to get kids outside after the sun goes down, from night hikes to trapping moths. It's also a fascinating meditation on humans' relationship with darkness.--Outside
A fun, inventive adventure guide about helping children explore nature after dark . . . Its activities are a great excuse to turn off the television, set down smartphones, and explore the rich, mysterious world just beyond the back door.--Foreword Reviews
The go-to guide for exploring nature at night, whether on summer holidays, weekends away or even back garden adventures!
Foreword by Chris Packham, author, naturalist, and BBC presenter
Learn how to call for owls, walk like a fox and expand your sensory perceptions. Wild Nights Out is a wonderful new hands-on guide for those who wish to take kids (of all ages) outdoors for fun, thrilling nighttime nature adventures.
Parents, grandparents, teachers and nature educators alike will discover a wealth of unique activities to explore the natural world from dusk till dawn. Alongside games, walks and exercises to expand our senses, storyteller and outdoor educator Chris Salisbury will bring this unexplored nocturnal dimension to life with lore about badgers, bats and minibeasts as well as tales of the constellations and planets to share around the campfire.
In Wild Nights Out you can expect to find:
Nature has so much to offer at night, so let Wild Nights Out be your guide to the dark. It will boost the resilience and self-confidence of children and adults, and instill a lifelong love of having fun in the outdoors when the sun goes down.
3D printing was once only known through science fiction, such as Star Trek, the popular 1960s TV series. But inventors and engineers on Earth began experimenting in real life with 3D printing to find faster ways to develop and build prototypes, using computers, ultraviolet lasers, and printable materials. Now, there are many innovative uses for 3D printing. Yet 3D printing has drawbacks. Chemicals used in 3D printing can be toxic, and legal experts are not sure how to protect 3D printing inventions so that others do not steal ideas. Learn how 3D printing works and how we can keep up with the safety, health, and legal challenges that lie ahead.
Au coeur des mystères les plus sombres du Troisième Reich, ce livre offre une analyse rigoureuse et documentée des aspects les plus intrigants et méconnus de l'histoire nazie, séparant les faits avérés des mythes et spéculations qui ont émergé après la Seconde Guerre mondiale.
L'occultisme nazi: une quête de pouvoir mystique
Dès leur ascension, certains dirigeants nazis ont manifesté un intérêt prononcé pour l'occultisme et les doctrines ésotériques. La Société Thulé, une organisation secrète allemande fondée en 1918, a joué un rôle prépondérant en mêlant mythes aryens et idéologie raciste, influençant ainsi les fondements du parti nazi. Heinrich Himmler, chef de la SS, était particulièrement fasciné par les pratiques ésotériques. Il transforma le château de Wewelsburg en un centre spirituel pour la SS et créa l'Ahnenerbe, institut de recherche centré sur les origines supposées des Aryens et la quête d'artefacts légendaires comme le Saint Graal.
Les armes secrètes du Troisième Reich: entre science et fiction
Le régime nazi investit massivement dans le développement d'armes révolutionnaires, espérant inverser le cours de la guerre. Parmi ces projets figurent les célèbres fusées V2, premières missiles balistiques de l'histoire, qui furent les précurseurs du programme spatial de la NASA grâce aux scientifiques nazis exfiltrés aux États-Unis lors de l'Opération Paperclip.
Cependant, les ambitions technologiques du Reich ne s'arrêtaient pas là. Des projets plus audacieux, tels que des avions à réaction, des chars surdimensionnés et des armes à énergie dirigée, étaient en cours de développement. Bien que la plupart de ces armes n'aient jamais dépassé le stade de prototype, elles ont alimenté de nombreuses spéculations après guerre.
La disparition controversée de Hitler
La mort d'Adolf Hitler en avril 1945 a donné naissance à une multitude de théories alternatives. Malgré les preuves historiques attestant de son suicide dans le bunker de la chancellerie à Berlin, certains auteurs ont suggéré des scénarios d'évasion, évoquant des fuites vers l'Amérique du Sud ou des bases secrètes en Antarctique. Ces hypothèses sont abordées dans ce livre de manière rigoureuse et documentée.
Qu'offre ce livre de si particulier ?
Une recherche approfondie: Basé sur des sources fiables et des documents historiques, ce livre offre une analyse détaillée des aspects les plus obscurs du régime nazi.
Des thèmes fascinants: De l'occultisme aux armes secrètes, en passant par les mystères non résolus, chaque chapitre plonge le lecteur dans un abyme insoupçonné de l'histoire de la Seconde Guerre Mondiale.
En explorant les zones d'ombre du Troisième Reich, ce livre invite à une réflexion sur la frontière entre réalité historique et mythes, tout en offrant un voyage passionnant au coeur des secrets nazis les plus troublants.
Discover the wonders of science through this engaging experiment book designed for young students. Dive into exciting and safe experiments that inspire curiosity and hands-on learning. This book encourages young scientists to explore and understand fundamental scientific concepts with interactive activities. Perfect for inquisitive minds seeking fun and educational adventures.
Comprendre les mathématiques est essentiel. Mais savoir pourquoi chaque concept existe et comment il s'applique à notre monde rend l'apprentissage encore plus passionnant.
Discover the wonders of science through this engaging experiment book designed for young students. Dive into exciting and safe experiments that inspire curiosity and hands-on learning. This book encourages young scientists to explore and understand fundamental scientific concepts with interactive activities. Perfect for inquisitive minds seeking fun and educational adventures.
