In the new children's book "How We Got to the Moon: The People, Technology and Daring Feats of Science Behind Humanity's Greatest Adventure" (Random House Children's Books, 2020), award-winning author and illustrator John Rocco beautifully recounts humanity's journey to the moon.

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The Electrical Installation Guide (wiki) has been written for electrical professionals who must design safe and energy efficient electrical installation, in compliance with international standards such as the IEC 60364.

Guide de l'installation électrique
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700 pages pour accéder à toutes les informations et les évolutions technologiques relatives aux normes d'installation électrique publiées par la Commission électrotechnique internationale (CEI) et adapté à la norme NF C 15-100.

A practical guide with expert advice
Written by Schneider Electric's most talented electrical distribution experts, the Electrical Installation Guide is written for professionals who design, install, inspect, and maintain low-voltage electrical installations in compliance with the standards published by the International Electrotechnical Commission (IEC).

Our experts “do the heavy lifting” and share their industry-leading knowledge about new and updated electrical installation standards and technological evolutions so that you can have the most up-to-date and relevant information.

Do you want to help your children develop sharp minds, robust hearts, and a strong character? One of the best ways to do that is reading them good books. But how do you find good books? This list of more than 400 children's classics offers a place to start...

The public discussion of energy options tends to be intensely
emotional, polarized, mistrustful, and destructive. Every option is
strongly opposed: the public seem to be anti-wind, anti-coal,
anti-waste-to-energy, anti-tidal-barrage, anti-fuel-duty, and
anti-nuclear.

We can't be anti-everything! We need an energy plan that adds up.
But there's a lack of numeracy in the public discussion of energy.
Where people do use numbers, they select them to sound big, to make an
impression, and to score points in arguments, rather than to aid
thoughtful discussion.

My motivation in writing "Sustainable Energy - without the hot air"
(available both on paper, and for free in electronic form
[withouthotair.com]) is to promote constructive conversations about
energy, instead of the perpetual Punch and Judy show. I've tried to
write an honest, educational and fun book.[2] I hope the book will help
build a cross-party consensus in favour of urgently making an energy
plan that adds up.

"Sustainable Energy - without the hot air" presents
the numbers that are needed to answer these questions:

• How huge are Britain's renewable resources, compared with our current
  energy consumption?

• How big do renewable energy facilities have to be, to make a
  significant contribution?

• How big would our energy consumption be if we adopted strong
  efficiency measures?

• Which efficiency measures offer big savings, and which offer only 5
  or 10%?

• Do new much-hyped technologies such as hydrogen or electric cars
  reduce energy consumption, or do they actually make our energy
  problem worse?

The Stories and Message of God's Prophets
According to the Torah, the Psalms and the Gospel

J.R.R. Tolkien's son was instrumental in cultivating his father's legacy, shepherding unpublished works to readers and helping extend the world of The Hobbit and The Lord of the Rings. //

Christopher Tolkien, who for decades preserved and extended the beloved literary fantasies of his father, J.R.R. Tolkien, has died at the age of 95. The son's death, announced Thursday by the Tolkien Society, ends a distinguished career devoted to his father's legacy and the world he crafted in The Hobbit and The Lord of the Rings.

As the literary executor of the elder Tolkien's estate, Christopher edited and published a trove of works that had been left unfinished at the time of his father's death in 1973 — beginning in 1977 with The Silmarillion, a compendium of creation myths from Middle-earth, and continuing through the publication of the love story Beren and Lúthien in 2017. //

Christopher was an editor from the age of 5, catching inconsistencies in his father's bedtime tales, and was promised tuppence by his father for every mistake he noticed in The Hobbit," HarperCollins UK said in a statement released Thursday. //

He was also responsible for composing the original map of Middle-earth included with the The Lord of the Rings series when it was first published in the mid-1950s.

Historian Tom Segev's new biography of the Israeli prime minister and Zionist hero David Ben-Gurion chronicles 20th-century episodes still salient today. //

Segev tells Ben-Gurion’s story happening-by-happening. His go-to format is to provide an impressionistic account of the outcome of some notable incident in Ben-Gurion’s life, then to back up and fill in details. This can be refreshing when the conclusion is an intriguing historical moment or anecdote. But in this 600-page doorstop of a book, the writing tactic is repeated without fail for chapter after chapter.

The technique also leads to confusion when a reader comes to the book with little prior knowledge of the inner workings of, say, the interwar international Zionist Congress, and can’t begin to fathom what picture Segev is trying to paint with his conclusion put ahead of the facts. Yet Segev’s handling of the facts is thorough and masterful, and we can draw our own conclusions if we don’t like his. //

Toward the end of his life, he flirted with Buddhism, but Ben-Gurion’s true religion was always the nation of Israel, and for nearly 30 years, the two were practically synonymous. The twentieth century was the deathbed for a great many fanciful nineteenth-century notions. It turned out that David Ben-Gurion’s dream of a Jewish nation wasn’t one of them. Israel survives and thrives long after his passing.

The information below is from Walt Walter's book, THE WIND CHASERS

The Photos (all original) were given to Rod Howell
from another squadron member in January of 1968.

On the 19th of August 1964, the U.S. Weather Bureau Office in San Juan, Puerto Rico discovered an area of cloudiness and possible tropical circulation about 1000 miles southeast of Puerto Rico. The squad­ron had been tracking Hurricane Cleo since the 20th when one of the squadron aircraft discovered a low pressure area east of where the bad weather was re­ported. Continual tracking and reporting was made as she moved across the Caribbean. On the 24th Hurricane Cleo was approximately eighty-five to one hundred twenty-five miles south, southwest of Puerto Rico and moving west. Commander Walt Reese and his crew took off at 8:50am in WV-3, Bureau Number 137891 from Guantanamo Bay, Cuba to reconnoiter the storm. They were to make a low-level, daylight penetration and then land at the Naval Station Roosevelt Roads. They were to collect the usual weather data as on all penetrations, the lowest barometric pressure, areas of precipitation and extent of winds including the highest winds in the storm.

Pour a Christmas pint mates, and settle in for one of the great aviation tales. Written by Frederick Forsyth and published in 1975, this novella tells of a 1950s RAF pilot trying to fly home to England for the holidays in a deHavilland Vampire. But fate, always the hunter, intervenes. (Vampire images from an early version of Flight Simulator X, the airfield and terrain are actually--well, virtually--Celle, Germany where the story begins.)

Born in Ashford, Kent, Forsyth became one of the youngest pilots in the Royal Air Force, at the age of 19, and served till 1958. Becoming a journalist, he joined Reuters in 1961 and the BBC in 1965, where he was an assistant diplomatic correspondent. He is best known for thrillers such as The Day of the Jackal and The Odessa File.

For two hundred years the pessimists have dominated public discourse, insisting that things will soon be getting much worse. But in fact, life is getting better---and at an accelerating rate. Food availability, income, and life span are up; disease, child mortality, and violence are down all across the globe. Africa is following Asia out of poverty; the Internet, the mobile phone, and container shipping are enriching people's lives as never before.

In his bold and bracing exploration into how human culture evolves positively through exchange and specialization, bestselling author Matt Ridley does more than describe how things are getting better. He explains why. An astute, refreshing, and revelatory work that covers the entire sweep of human history -- from the Stone Age to the Internet -- The Rational Optimist will change your way of thinking about the world for the better.

Fluid Fuel Reactors
Edited by
JAMES A. LANE, Oak Ridge National Laboratory
H. G. MacPHERSON, Oak Ridge National Laboratory
FRANK MASLAN, Brookhaven National Laboratory

Copyright © 1958 by

ADDISON-WESLEY PUBLISHING COMPANY, INC.
and assigned to the General Manager
of the United States Atomic Energy Commission

On 2018-11-16 (November 16 of 2018)
the U.S. Department of Energy
owner of Fluid Fuel Reactors copyright
granted Gordon James McDowell
nonexclusive license to republish
and prepare derivative works.

Traditional IP communication allows a host to send packets to a single host (unicast transmission) or to all hosts (broadcast transmission). IP multicast provides a third possibility: allowing a host to send packets to a subset of all hosts as a group transmission. This overview provides a brief, summary overview of IP Multicast. First, general topics such as multicast group concept, IP multicast addresses, and Layer 2 multicast addresses are discussed. Then intradomain multicast protocols are reviewed, such as Internet Group Management Protocol (IGMP), Cisco Group Management Protocol (CGMP), Protocol Independent Multicast (PIM) and Pragmatic General Multicast (PGM). Finally, interdomain protocols are covered, such as Multiprotocol Border Gateway Protocol (MBGP), Multicast Source Directory Protocol (MSDP), and Source Specific Multicast (SSM).

This document is intended as a general "refresher" on IP multicast, not a tutorial. It is assumed that the reader is familiar with TCP/IP, Border Gateway Protocol (BGP), and networking in general. Please refer to Beau Williamson's book titled Developing IP Multicast Networks, Volume 1 (Cisco Press, 1999) if you need more information about any of the topics presented in this overview.

Introduction

IP multicasting is a bandwidth-conserving technology that reduces traffic because it simultaneously delivers a single stream of information to thousands of corporate recipients and homes. Applications that take advantage of multicast include video conferencing, corporate communications, distance learning, and distribution of software, stock quotes, and news. This document discusses the basics of how to configure multicast for various networking scenarios.

By: Petr Beckmann

Clandestine Laughter in the Soviet Empire By: Petr Beckmann What is Communism like? The full answer can be learned by living under it; a partial view can be gained by reading such works as Solzhenitsyn's Gulag Archipelago.

Love is the mightiest force in all this world. Bestowed with the first breath of God into our souls, it softly permeates every sphere of life, from the first moment of our conception to the slipping away of our last breath. But somehow we wrest it to our own ruin as we live out our lives, forcing it into an ugly and twisted manifesto for our darkest narrative of selfishness, wielding it as a grievous weapon against those close to us instead of raising it as a faithful standard over their hearts.

How can a quality so admirable, bequeathed to us by God himself, become such a destructive element in our life stories? And is there any hope of redemption from our treachery?

CS Lewis explores these questions in this masterful novel. He takes the Cupid/Psyche myth and recasts it in an unlikely setting, the barbaric city-state of Glome, set in a classical epoch. A girl named Orual is growing up in the palace, daughter of the king. Her simple world of childhood, experiencing everyday life and wondering at change, is about to change vastly. But hers is no fairy-tale story. She intuits from her youth that she is not beautiful, and she fears her father, whose cruel temper and overbearing competence threaten to crush her spirit.

Then wisdom enters her heart. Glome wins some obscure battle and her father brings home a bedraggled Greek prisoner, charging him with the education of his daughters. The Fox pours himself into Orual, teaching her the beauty of words, imparting his love of philosophy, guiding her in reason. She calls him Grandfather, and she loves him.

Next, impossibly, beauty enters her heart. Her father's ill-fated bride dies soon after childbirth, but leaves a daughter. And not just any child. Her name is Istra, Psyche in the Greek; and she is the brightest and fairest light ever to shine on that muddy, despairing corner of the world. She personifies beauty, wonder, and selflessness. Orual knows delight now, and she loves her sister more deeply than she has never loved anyone in her life. It seems her joy is too full now to ever wane.

Life goes on for them, as life does, and with the passing of time comes trouble. Famine and plague strike Glome. The people begin to mutter, and then to shout, and then to rebel. And they demand sacrifice. In their religious culture the goddess Ungit reigns supreme. She is a shapeless, faceless, dread-instilling queen of nature represented by a stone over which the blood of only the most perfect in their society must be poured to forestall judgment. It is only a matter of time until Psyche's name is mentioned.

Orual's world is shattered around her. Psyche, though she feels the bitterness of the sentence, goes willingly to her death, yet curious whether the mythology of the Shadowbrute, Ungit's son, the god of the Grey Mountain, is true.

It is here that courage enters Orual's heart. She determines to rescue her sister from the jail cell where she awaits her doom, and she attacks Bardia the captain of the guard to rescue Psyche. Bardia thwarts her attempt but praises her for it. His simple words give her hope for life, and he is added to the tightly knit world of the people she loves.

From here the book is a carefully constructed swirl of the four hearts that are so closely knit together, progressing into the unpredictable yet eternally repetitive abyss that life must be for all of us. Orual loses Psyche, not just to the Shadowbrute, but to her own despairing attempt to pull her away from her new lover. She is consigned to a life that is bitterly futile but distractingly energetic and demanding, taking over the kingdom from the disintegrating grasp of her father, entering a new world of political intrigue and civic minefields, matching wits and steel with her adversaries, learning to "queen it" with her faithful friends by her side. But her face is veiled now.

For Orual has now seen what love is. She knows that it is not the dark insistence that rules in her heart, using the Fox's wisdom to navigate her way around people and problems, sucking life out of the beauty of Psyche, leaning on Bardia's strong arm until it failed her. She knows that love is what Psyche did when she paid the price for Orual's life, jeopardizing the most precious thing she had ever found for someone she loved. And when you have seen the face of love, your vision of the world will never be the same again; you will have no peace until you have looked on the face of divine love, and reckoned with it.

Now Orual and Psyche are set upon their irresistible courses of fate, one on the high road and the other the low. Their tasks are superhuman, their hearts riven to the core by their bitter separation, their hopes set only on attaining an answer from the council of the gods that has sat silent over their unfolding tribunal. One of them has broken faith with God for love of her sister; the other has broken the heart of her sister because she had no faith in God. And both await redemption, one with unveiled broken beauty and the other with masked ugliness of heart and aspect. Both await the voice of the Lover of their Souls.

Although I am an inveterate lover of good literature, and find myself more and more susceptible to random emotional upsurges the older I get, this book is in a wholly different category with the breadth of feelings I experience when I read it. There are at least four or five places where I often lose it, and there is one in particular where I can never read it at all without outright weeping: the scene where Psyche is performing her final task, bringing beauty back from the Queen of the Deadlands to make Ungit beautiful. She makes it past all the others, but then she must walk past Orual, the one for whose love she gave up her innocence. And I cry like a baby everytime.

If you could not tell by now, this is my favorite book of all time, second only to Holy Writ. I have read it at least eight or 10 times. If you have not read it yet, you need to. More than most fictional novels it portrays the heart of Jesus for us - for me - in a way that transcends the boundaries we normally place on the lengths to which He is willing to go for our souls. Read this story and believe, for we too are Psyche.

JV

The Arch Book series tells popular Bible stories through fun-to-read rhymes and bright illustrations. This well-loved series captures the attention of children, telling the Bible stories in an enjoyable and memorable way. This set contains one of each Arch Book currently in print.

View all books in the set here.