Space Tethers and Space Elevators




Regular Price: $29.95 |
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Product Description

Michel van Pelt explains for the first time the principle of space tethers: what they are and how they can be used in space. He introduces non-technical space enthusiasts to the various possibilities and feasibility of space tethers including the technological challenges and potential benefits. He illustrates how, because of their inherent simplicity, space tethers have the potential to make space travel much cheaper, while ongoing advances in tether material technology may make even seemingly far-fetched ideas a reality in the not too distant future. Top to learn more



A Useful Introduction to an Esoteric Spaceflight Topic
Michel van Pelt's "Space Tethers and Space Elevators" provides a good introduction to a spaceflight subject that probably only very few people understand. Even fewer people realize the benefits that might accrue if Earth's spacefaring nations were to replace their loud, smoky, vibrating, polluting, marginally reliable "rocket ships" as satellite launchers and instead use applications of tether technology to launch their payloads into space. That there are advantages to using tethers and "space elevators" instead of rockets is undeniable. Equally undeniable, however, is that space tethers have their own sets of issues and problems, and most of their applications depend crucially on super-strong yet lightweight materials that have not yet been invented, and may well be unobtainable."Space Tethers and Space Elevators" is very well-organized and clearly written, and it contains just the right level of technical depth to make it accessible to most readers who know anything at...
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Kensington 64068F MicroSaver Notebook Lock and Security Cable (PC/Mac)




Regular Price: $49.99 |
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Product Details

  • No screws, brackets or glue for installation of this computer lock - no changes to your computer
  • Wide range of compatibility--laptops, monitors, and any device with a Kensington security slot - the industry standard
  • One piece design for ease of use - no little pieces to lose or misplace with this computer lock
  • 6-foot cable made of steel-composite with a carbon, tempered-steel core and patented T-bar lock to provide the most secure connection to security slot
  • Packaging may vary - regardless of packaging, product is the same





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Customer Review


Notebook physical security doesn't get much easier
When it comes to notebook physical security you need a device that will deter crimes of opportunity -- such as those presented by leaving your notebook at your desk at work or at a table in a library while you browse the shelves. If you want to protect your notebook from a determined thief, buy a safe.Most cable security devices are going to provide about the same amount of security so you need to focus on ease of use. If a device is easy to use, then you're more likely to use it and use it properly. The Kensington system doesn't get much simpler. It consists of a cable, which is wrapped around a reasonably unmoveable object, and an attached key lock that attaches directly to your notebook's security slot.Compare the Kensington system with the Curtis 06414 system and you'll probably agree that the Kensington system is far easier to use. Compare it's 1 piece system to the Curtis system which uses a cable, a seperate metal piece that hooks to the notebook's security slot and...
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Nice deterrant, for the price, but don't expect this to do more
As one reviewer pointed out succinctly, this is a deterrent. Get up and leave your laptop for a few minutes, this lock makes a good deterrent from the casual, opportunity-driven thief. No, it won't prevent someone vandalizing your laptop. No, it won't stop a thief with a good cable cutter. So if you see anyone at the cafe or library with a cable cutter, think twice. Oh, you would anyway? I thought so. Some reviewers here must think you have no common sense. So let's assume you do. You're considering this one because it's a very AFFORDABLE deterrent. Another Kensington with an alarm may appeal to you if you want wander a few feet out of sight of your laptop, and want an audible alarm if someone tries to yank it off -- but then, who in their right mind will try to defeat a laptop with an alarm in a library? It's all a matter of risk assessment. If you think you may be leaving your laptop in a place where passersby possess industrial-grade cable cutters or the knowledge to defeat...
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Top-notch laptop security
This is a tremendous product that is exceptionally simple and effective. I bought one for my laptop when I entered college. I secured it to a part of my desk, and could then ease my mind when my roommate's friends would come and go, if we had study groups, or if someone managed to break in. I worked at the superintendent's office of my dorm and heard tons of complaints about laptops being ripped off, and this is a terrific solution to protect your valuable investment.The cable is also extremely strong. I ended up losing my keys to the lock and had to have a locksmith come to my dorm to undo the lock. It took him 2 hours with professional equipment to cut through the cable. Then, I took the laptop into his shop, and it took him another 40 minutes to extract the lock part from the slot in my computer. Now, I make sure to write down the little security code on the key so I can order a replacement set, but that experience really confirmed my faith in the safety of the...
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Product Description

The Kensington 64068F MicroSaver Notebook Lock and Security Cable deters thieves from stealing your notebook and the personal information on it. Patented T-bar locking mechanism and super-strong carbon tempered steel cable provide maximum protection that attaches to the standard Kensington security slot found in 99% of notebooks, and many flat panel monitors, desktops, projectors, printers, docking stations, tablet PCs, and other devices. Secure, protect and lock down your computer and leave it safe. The Kensington Microsaver notebook lock and security lock is 6 feet in length designed using a 5.5mm thick, super-strong, steel composite cable with a carbon tempered steel core. Its built-in defense system guards against lock tampering. The lock is easy to install and can be used to secure your laptop in the office or when traveling. The lock features a sleek styling and design won't block notebook ports or lift a notebook off the desk. Custom keying options are available in a master access, shared access, or supervisor-only access and includes 2 keys and a rubber cable tie for cable management. Top to learn more




Lexar JumpDrive TwistTurn 8 GB USB 2.0 Flash Drive LJDTT8GBASBNA (Blue)




Regular Price: $22.99 |
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Product Details

  • Capless design with rotating case
  • Compatible with high-speed USB
  • LED activity light blinks during file transfer
  • Compatible with Mac® and Windows®
  • 8GB capacity





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Customer Review


Simple and functional, excellent design
I've been looking for an ideal usb drive for quite some time, which means it should not have a cover that can fall off and with a good read/write speed. My previous favorite was the series which were built much better but are no longer made!This drive is fast, has an all-in-one design (the casing itself fits onto your keyring), works with my Mac (OS X Snow Leopard) and looks great as well. In addition, the casing seems durable and weighs less than most plastic flash drives - you barely feel it on a keychain or in your pocket.If you're looking for a simple and functional USB flash drive, this will serve your purpose.
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Great Key chain USB. Replacement for failed Sandisk
I owned Sandisk keychain USB for years. Got a replacement new Sandisk USB - the keychain attachment broke after a week Sandisk would not replace the 10 cent keyring - cannot find small like that anywhere else.So I bought Lexar JumpDrive. Great product. Durable, attaches to key ring--easy to carry around. It travels everywhere I go. It's a new product - I was hesitant to buy it online but I am glad I did.Best design ever. If you like to have your USB everywhere you go, you'll be happy with this one.
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Product Description

Stylish Portable Storage in a Protective Rotating Jacket Lexar offers a comprehensive line of high-performance USB flash drives designed with a wide variety of features, capacities, and capabilities. With so many options, it's easy to find the right Lexar JumpDrive product to fit your needs and lifestyle. Lexar JumpDrive TwistTurn is a high-capacity USB flash drive that provides a convenient solution for storing, transferring, and sharing multimedia and more. Convenient, High-Capacity Solution High-Capacity Storage and Stylish Housing. JumpDrive TwistTurn is available in a range of large capacities, allowing you to transfer, store, and share a vast number of data, photo, music, and video files. The drive has a capless design with a rotating case to protect the drive and its contents, providing an excellent combination of durability and convenience. Plug-and-Play Design with Great Features. JumpDrive TwistTurn has a simple plug-and-play design that allows you to quickly and easily store files, so wherever you go, your information goes with you. Its durable hinged jacket rotates to easily access a USB port, and it sports an LED activity light that blinks during file transfer, so you know when the job is done. JumpDrive TwistTurn also works across platforms, giving you flexibility and ease of use. Created to suit your style, JumpDrive TwistTurn is available in a different stylish color for each of its varying capacities. It also makes a fashionable accessory and comes with a key chain hole, making it easy to tether to a key ring, attach to a backpack, or hook to a purse or briefcase. With large storage capacities and stylish design, Lexar JumpDrive TwistTurn is an incredibly versatile and convenient portable storage solution. Lexar. When Memory Matters. DISCLAIMER: Actual usable memory capacity may vary. 1MB equals 1 million bytes; 1GB equals 1 billion bytes. Top to learn more




Joy at the End of the Tether: The Inscrutable Wisdom of Ecclesiastes




Regular Price: $10.00 |
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Customer Review


Howard Eames, Headmaster Redeemer Christian School, Arizona
Doug Wilson has finally provided the biblical balance for this book that contemporaries of our Lord Jesus would have said "defiled the hands." Unfortunately, many contemporary Christian expositors have agreed. This is not a book written by a backslidden schizophrenic. But it is a book of profound philosophy and a glorious exposure of the world's vanities. Every thing from inscrutable repetitiveness to ephemeral transitoriness is there - but the Church has had its exegetical eyes closed. Doug has steered a clear path between the Scylla and Charybdis of biblical interpretation. Skip the others and buy Wilson and Kaiser.
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Outstanding Short Overview of Ecclesiastes
Doug Wilson's exposition of the book of Ecclesiastes is concise, well reasoned, and outstanding. He offers real world application on the following subjects:- Joy- Despair- Right Judgment- Loving your wife- The Law- The Place of Working Hard- And other topicsWilson furnishes a review at the end of each chapter.This is a short overview of book of Ecclesiastes (125 pages) consequently it makes a good devotional resource for believers as they simultaneously read and ponder Solomon's prose. It lacks the deep detail required for biblical preaching but can be used to augment therein.The author's writing style is precise, yet smooth. I suggest you pick this fine overview of an important book in God's word.By Michael A Robinson author of numerous books on apologetics and philosophy; Including:Letter to an Atheist Nation: Presupositional Apologetics Responds To: Letter to a Christian
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A Life Changing Read
This is easily my favorite read in the last ten years. I've found no better explanation for understanding the enjoyment of the good and the beautiful than in Wilson's commentary on Ecclesiastes. All this enjoyable stuff is just so much meaningless vanity that is here today and gone tomorrow, but when understood as gift from God's good hand it changes everything. That's the book in a nutshell, but your life will be so much more enriched by studying "Joy At The End Of The Tether" along with Solomon's meditation on life.
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Product Description

In this lively reading of Ecclesiastes, Doug Wilson reveals its powerful lessons of vanity, joy, celebration, and the sovereignty of God. Top to learn more




Swingball Replacement Ball and Tether




Regular Price: $12.99 | Price with discount: $10.44 | You Save: $2.55 (20%)
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Product Details

  • Measures 140cm - long enough for really good hits
  • Swingball Tether replacements for the Swingball Pro with "Windicator"
  • Comprises a real tennis ball tethered to cord
  • Easy to fit - no long wait until the next game





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Customer Review


Swing ball
Swing ball is a nice fun toy, keep the kids active and away from the TV, alway good to buy replacement part just in case of accidental breakage although the toy does look strong.
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Product Description

Swingball Replacement Ball and Tether Top to learn more



Swingball Replacement set
We had our Swingball set for almost one year before my seven-year-old hit the ball so hard that it detached from the string. The replacement part's string was too long for the set, but I was quickly able to tie a couple of knots to shorten it. It works fine so far. The game itself is great for improving hand-eye coordination and loads of fun in the basement during the long winters in the area in which we live.
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Fun activity for 2
Had to order replacement part because dog chewed the string and ball on the original into little pieces. Service on delivery perfect.
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The Last Books of H.G. Wells: The Happy Turning: A Dream of Life & Mind at the End of its Tether (Provenance Editions)



Regular Price: $8.95 |
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Product Description


This volume contains the two last works by HG Wells. Nearing the end of his life, increasingly distressed over the war, Wells deals with death and apocalypse, mortality and religion, and with “human insufficiency.”
 
Mind at the End of its Tether
 
“One approaches it with awe. You come across references to it everywhere: Colin Wilson, Priestly, Koestler. It seems to have been a wounding work; something no one could agree with, but something that couldn’t be taken lightly.”—Art Beck
 
“In the face of our universal inadequacy . . . man must go steeply up or down and the odds seem to be all in favor of his going down and out. If he goes up, then so great is the adaptation demanded of him that he must cease to be a man. Ordinary man is at the end of his tether.”—HG Wells
 
The Happy Turning
 
Wells’ barbed fantasies about the afterlife take the forms of “happy” dream walks. In one he converses with Jesus:
 
But being crucified upon the irreparable things that one has done, realizing that one has failed, that you have let yourself down and your poor silly disciples down and mankind down, that the God in you has deserted you—that was the ultimate torment. Even on the cross I remember shouting out something about it.”
“Eli. Eli, lama sabachthani?” I said.
Did someone get that down?” he replied.
“Don’t you read the Gospels?”
Good God, No!” he said. “How can I? I was crucified before all that.”
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BUY The Last Books of H.G. Wells: The Happy Turning: A Dream of Life & Mind at the End of its Tether (Provenance Editions)



Buy Tether


And this leads to a very interesting conclusion: the shock absorption device ( Screamer ) doesn't really need to be on the the tether, it belongs on the u-bolt. The presence of Screamers in the cockpit might encourage sailors to shorten their tethers. "A lesson in harness and tether construction can be learned from Tami Ashcraft, who along with a sailor friend was making a sailboat delivery to Hawaii when they ran into a powerful storm. ) Attaching the snap to the center of a 2-leg tether with a larks head is quite convenient. When she came to more than 24 hours later, she climbed to the cockpit where a single tether dangled over the side. No one wants more clutter on the tether. Glyn Charles was never found, after his tether parted. Thus, if we clip Screamers only to the cockpit u-bolts, the force is absorbed where it needs to be and no new hardware needs to be invented. But the force of dragging his body through the water could not have generated that kind of force, only a sudden impact. ( These knots weaken the webbing about 30% ). Tails must be 3 inches and knots must be tightened by bouncing on them with body weight to prevent loosening or slippage--standard climbing practice. Only if the sailor is attached to a u-bolt in the cockpit is the impact force extreme. In fact, the mere presence of shock absorbers on construction lanyards has been credited with safer work practices, as it reminds the workers of the incredible forces involved. Some sailors have expressed concern about the elongation of the Screamer on-deck, and this removes that concern. I'm still playing with the lengths and years of climbing expereince tell us that the knots are not a real risk.

sound is very precise, it is considered a musical instrument Protective nylon grommets are used on the chimes, increases cord life by 700-percent and producing a clearer, cleaner sound Diamond line, the indestructible fiber used to tether... Best Buy Russ Berrie WC-JWS-703 Symphony JW Stannard Wind Chime The 72-Inch, “Symphony” wind chime. Diamond Line, the indestructible fiber used to tether satellites, holds the Stannard chimes together. 8 tubular chimes: E,F#,G#,A,B,C#,D#,E J. W. Stannard has long been recognized as one of the premier wind chime manufacturers. Protective nylon grommets are used on the chimes to minimize each cord’s contact with each bell, increasing cord life by 700-Percent and producing a clearer, cleaner sound. The 8 hand-tuned tubular bells of this large chime will enchant you with the resonant tones of an ancient bell tower. magnetic clapper can “turn off” your chime The top is made from weather resistant hardwoods and hand-rubbed with three coats of marine varnish.

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Tether News


 
  • Web designer turns digital globetrotter


    When we arrive in a country we will normally buy a prepaid SIM card for our mobile phone and then use it to tether our computers to the internet. This seems to work really well and it is relatively inexpensive to do this way.

  • Talking Cars and iPhone Tethers: The Consumer Electronics Show


    This is the show where tech giants roll out their latest, greatest and the not-quite-reality-but-just-you-wait inventions and gadgets, and where the public gets its first look at what people will be camped out in line to buy sometime in the future.

  • Inventions to bet on at Minden Elementary's annual convention


    “That told me more people would buy my invention.” Tanner is a tether ball fan, but his enthusiasm for the sport wanes in the winter months. “It was very cold outside, and I had a rope burn from tether ball,” he explained in his report.

 
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Gerber Girls 2-6x Two Pack Toddler Blanket Sleeper,Daisy Monkey Print,3T

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