Buy Low Price From Here Now
Sealed Power R-814 Rocker Arm
Readmore
Technical Details
See more technical detailsImages Product
Buy Sealed Power R-814 Rocker Arm Now
Monday, March 8, 2010
Sealed Power R-814 Rocker Arm
Buy Low Price From Here Now
Sealed Power R-814 Rocker Arm
Readmore
Images Product
Buy Sealed Power R-814 Rocker Arm Now
Hanukkah: A Counting Book In English - Hebrew - Yiddish
Buy Low Price From Here Now
Graphic, vibrant artwork and die-cuts in the shape of candles combine to create this informative and elegant book about one of the most joyous Jewish holidays. The symbols of Hanukkah, the Festival of Lights, are visually presented to stunning effect as young children learn to count in three different languages from one to eight. Die-cuts of colorful candles--one for each night of Hanukkah--against rich black backgrounds add up one by one with each turn of the page. The importance of the menorah, shamash candle, dreidels, and more are explained in this simple retelling of the story of Hanukkah
Readmore
Technical Details
See more technical details
By Charles Ashbacher (Marion, Iowa United States(cashbacher@yahoo.com))
One of the major benefits of the movement towards multiculturalism is that students in elementary schools are now exposed to December holidays other than Christmas. They now combine the celebrations of the Christian Christmas, Jewish Hanukkah and African Kwanza. That was not the case when I was in school, during the three years I was in junior high there was one student who always insisted on saying "Happy Hanukkah" when others said "Merry Christmas." I eventually had to ask him what it meant because I did not know.
This book is an excellent resource for the inclusion of Hanukkah in elementary school classes. The counting to eight for the eight candles of Hanukkah is done in English, Yiddish and Hebrew. A few additional words are included as different objects are counted. The book closes with a brief description of the origin of the Jewish holiday of Hanukkah.
By T. Parmer
The type is incredibly hard to read because of the background colors! Other than that, a nice little counting book.
By
This lovely book has beautiful, bright graphics, as pleasing to a 2 year old as to a 4 year old and beyond! The text is clear and informative. A pleasure to read!
By
Because my kids really love this book, I brought a copy to Israel to give to their cousins. Had I known the kids were going to fight over it, I'd have brought one for each of them!
By
My kids love reading the book over and over again!
We give it as a gift to friends and family.
Images Product
Buy Hanukkah: A Counting Book In English - Hebrew - Yiddish Now
Sunday, March 7, 2010
Scientific American
Buy Low Price From Here Now
This magazine is designed for technically educated professionals and managers who have a positive predisposition to read about, get involved with and act on a broad range of the physical and social sciences. Its articles and features anticipate what the breakthroughs and the news will be in a society increasingly dependent upon scientific and technological advances.
Readmore
Technical Details
See more technical detailsBy B. Albers (U.S.A.)
My family has had subscriptions to Scientific American for three generations.
I have old copies announcing the Wright brothers famous flights.
Sadly times have changed!
In the past 20 years this once great magazine has been turned into a political left wing activist rag.
Every single issue now has several articles about global warming just for starters.
If you are a left winger then this is the rag for you.
If you want to read about "Industry and Enterprise" and/or "Mechanical and other Improvements" forget it; this ain't that!
2/3's of this magazine is now devoted to political discourse.
If you want science then get a subscription to "Science News" or "Science" if you can afford it.
Don't waste your time or money on this propaganda until they scrap their editorial slant and go back to their roots.
I am sure their subscription numbers are sinking fast!
By Physicians Interactive (Vincennes,Indiana)
I used to read Scientific American 10 years ago and found it to be too technical.
Now it's written so that a non-Phd can comprehend it.
By James Raymond (Las Vegas, NV)
I used to love Scientific American in the 70s and 80s and saved all the issues. But I started noticing a fundamental dilemma: each issue had an article that was superficially science but mainly political, and always of a left-wing nature. If they labeled these articles as editorials, there would be no problem, but they always tried to pass them off as scientific truth. I dropped out. Then I started a subscription recently in order to not lose my airline miles. The January 2010 issue was a big disappointment. About half the articles had political messages, much worse than in the 80s. How sad to see a great magazine taken over by political ideologues.
By Stacy Philippou (Tucson, AZ)
I bought this subscription for my husband and pretty much everyone in our family reads it including our 4 year old and my dad who visits us from Hawaii. My dad loves it so much we're getting him a subscription for xmas. They always include intriguing content.
By W. Aldrich (SCOTTSBORO, AL, US)
Throughout the sixties and seventies this magazine, this Scientific American, played a significant role in the development of budding critical thinkers. At the least it was a periodical that satisified thoughtful, logical thinkers. Thinkers that had been abandon by the dry, inaccurate textbooks provided by the bureaucratic, so-called educational boards that served no other function but to pander to their political interests. At most it served as a treatise of legitimate scientific thought. This once revered, lay, scientific journal that with some effort could be understood by those of us that were ignorant, but interested, has now debased itself into a gooey morass of popular political pap. If you remember it as an enjoyable, informative, periodical that for decades served the purpose of satisfying your thirst for lay scientific knowledge, it is no longer. It now serves the egos of the mediocre thinkers that believe their view of existance should be yours.
Images Product
Buy Scientific American Now
Saturday, March 6, 2010
Scientific Explorer's Disgusting Science - A Kit for Studying the Science of Revolting Things
Buy Low Price From Here Now
Grow your own friendly germs and fuzzy molds. Mix up a batch of coagulating fake blood. Even make a stinky intestine. learn the science behind unmentionable bodily functions while doing some truly NASTY Experiments. Ages 8+
Readmore
Technical Details
- The perfect present for the tween-aged child that is hard to shop for!- Learn how to grow friendly molds and bacteria in petri dishes
- Discover what creatures live on YOU!
- Learn the scientific reason of what causes passing gas and stinky feet
- This unusual kit makes science FUN!
See more technical details
By Charity Reed (Maryland)
wasn't impressed with this kit. The plastic petry dishes break easily and the tubes do not seal well. The kit is messy and my 10 old daughter needed a lot of help to do the projects. She lost interest in it quickly.
By N. Sokolovich
This was a gift from my mom and I loved it. I did a science project with it and had soooooooooooooooooooooooo much fun. If you are thinking of buying I would say yes buy it shu shu shut your mouth just bye it.I love it it was soooo much fun to grow the bacteria and make the fake blood. The intestine was gross but I still loved to squeeze it.
By Jennifer Duncan (STATESVILLE, NC, US)
I bought this as a gift for my nephew for Christmas. He seemed to really be excited and opened it while we were visiting and really enjoyed it.
By L. Lynch (Perrinton, MI USA)
I purchased 2 of these kits for my grandsons for Christmas. When one of them opened his, the plastic packet inside had exploded and ruined some of the contents. I wrote to the toy maker and explained my problem and that I had purchased the gift earlier on Amazon and it exceeded the 30 day return policy. The box was sealed, the silver packet inside was sealed and the small plastic packet inside that was still sealed. I quickly received a response that the toy company would immediately replace the packet that was ruined. Would never hesitate to purchase anything from them, since they stand behind their products so well.
By Shuree D. Munden-Wagstaff (Southern California)
Here is a fun way to introduce reluctant learners to science. Probably works well with willing learners too. The kids had a lot of fun with this and I would recommend it as a gift for any kid.
Images Product
Buy Scientific Explorer's Disgusting Science - A Kit for Studying the Science of Revolting Things Now
Sper Scientific WBGT Heat Stress Meter - 800036
Buy Low Price From Here Now
Wet Bulb Globe Temperature (WBGT) is used to determine the combined effect of temperature, humidity, solar radiation and wind speed on people. The military, industrial hygienists and athletes use it to determine safe exposure limits in high temperature environments.
The WBGT index was developed by the United States Marine Corps and today many military installations will display a certain colored flag to indicate the heat category based on the WBGT index. The American Conference of Governmental Industrial Hygienists publishes threshold limit values that are widely accepted and adopted for workplace safety.
The Sper Scientific WBGT Heat Stress Meter is a light-weight measurement instrument compact enough to carry anywhere to avoid heat exhaustion in public health, sports, military and industrial activities.
Readmore
Technical Details
- WBGT Range: 0~50ºC, 32~122ºF l Res. 0.1º C/F l ±2ºC in, 3ºC out (-15~40ºC)- Air Temp: 0~50ºC, 32~122ºF l Res: 0.1º C/F l Accuracy: ±0.6ºC
- Globe Temperature: 0~80ºC, 32~176ºF l Res: 0.1º C/F l Accuracy: ±2ºC (15~35 ºC)
- RH: 0~100% l Res: 0.1% RH l Accuracy: ±3%(10~90%) otherwise ±5%
- 5 Year Warranty
See more technical details
Images Product
Buy Sper Scientific WBGT Heat Stress Meter - 800036 Now
Friday, March 5, 2010
Dial Barometer
Buy Low Price From Here Now
Large, clear dual-scale barometer in hPa (hecto Pascal) and mm (millimeter mercury) on a 4" dial which is easy to read from a distance. For classroom, lab, or industrial use. Accuracy of ±3 to 4 hPa. Wall mounts. Weight 2.6 oz.
Readmore
Technical Details
- Dual Scale- Hecto Pascal (hPa)
- Millimeter Mercury (mmHg)
- 4" Dial
- 5 YR Warranty
See more technical details
Images Product
Buy Dial Barometer Now
Wednesday, March 3, 2010
Beyond Engineering: How Society Shapes Technology (Sloan Technology Series)
Buy Low Price From Here Now
Drawing on such disparate fields as history, economics, risk analysis, management science, sociology, and psychology, the author of Eve's Rib illuminates the complex, often fascinating interplay between machines and society, in this highly readable account of how technology and the modern world shape each other.
Readmore
Technical Details
See more technical detailsBy actinite (Laurel, MD USA)
Despite the fact that this book may cause the casual reader to want to gloss over the details of the history of the A-bomb or nuclear reactors or even of electricity, for a young PhD Research Engineer such as myself, it gives greater meaning to research. In fact, it has been instrumental in spurring me towards a career in science policy and/or technology transfer, or something that involves the integration of science, policy, and business (a pursuit currently under way). The point is very clear - the best technology does not always win. This underscores the need for more technologists to understand the non-technical factors involved in product or process commercialization and to respect the democratic process, rather than being aloof about the "goodness" of "pure science".
By
I think this book is a wakeup call for society - for all of us to re-evaluate ourselves and recognize the role we play in the evolution of technology. I think the author brings out such a valid point of the complexity of technology, and as a scientist/engineer myself, I find it refreshing, and not a burden, to think up new ideas and view my field in light of what effect society could/would have on it, instead of just what effect it could have on society. I personally think some of the detail on nuclear power could have been avoided without the reader missing the point (but I guess you can't disregard the hand (publisher) that feeds you). I also draw attention to another book, Biomimicry by Janine Benyus, which makes the point that nature provides a model for scientific innovation. If nature was our map, then the complex picture of technology that Pool paints could be a lot clearer and brighter.
By Tom Gray (Fort-Coulonge, Quebec Canada)
`Beyond Engineering' is subtitled `How Engineering Shapes Society'. It is that but it is much more. It is a book about technology and society. It is part a descriptive history and sociology of technology and part a prescriptive analysis of how society can manage technology to its best purposes. It is broken into two main parts. The first describes the technological process and shows how technologies are selected for mass utilization. The second uses this analysis and discusses the issues that have now arisen with the ascendancy of technology and its central place in society.
In discussing the technological selection process, the author Robert Pool makes much of the power of incumbency. A new technology does not arise form nothing but is developed in a co-evolution between scientific progress and societal capabilities. It is developed by human beings who live in a particular point in history and thus have their values and practices shaped in a specific manner. Any technology that is developed will have to be compatible with the social and technical attitudes prevailing at that time. Pool shows in his discussion of the development of the Watt steam engine that the engine was developed taking into full account the attitudes of the people who would have to implement and manufacture it. Watt could scientifically demonstrate the need for tight tolerances to maximize efficiency but his engine was being developed in an era of craft workman who could not see the necessity of such tolerance. Watt was compelled to set up controlled manufacturing sites where he could build machines to the required tolerances. It would have been more efficient to manufacture the engines in place with local labour but that could not be done in the ethos of that time.
Mistakes once made in the development of technology will propagate themselves in the social and technical attitudes of the people involved in its continuing development. Pool shows how nuclear power developed within the technological attitudes of military propulsion and civilian power generation. Pool shows how attitudes in these domains shaped the technological choices and how these choices were not the best either technically or commercially. Pool's analysis of the power of incumbency and the multi-armed bandit is excellent here.
The second part of the book talks of central place of technology in our society. Technology has moved far from the time of Watt. Now, technology is so complex that no one human being can be aware of all that factors that go into the development and operation of a major new invention. The implication of this is that no one can understand and predict the operation of a major invention in all circumstances. Technological risk cannot be obviated by the building of entirely predictable systems. Rather risk has become probabilistic with designs being created to hopefully prevent failures causing major loss of life or economic loss rare.
Society must decide if the risks inherent in a technology are acceptable given the benefits tha can be derived from it. Since no complex technology is predictable this acceptance must in some manner be built around a faith in our societies ability to cope with uncertainty. Since no technology can be proved safe in all circumstances, society must be shaped in such a way that it can rapidly cope with unexpected serious failures.
This analysis shows the basic disagreement between the neo-Luddites or technological pessimists and the technological optimists. Pool discusses the work of a Yale sociologist named Charles Perrow who argues that complex technologies cannot be so maintained. They are rife with un-understood emergent properties that render them unmanageable. They are so complex that they cannot be understood by any one person and therefore must be managed centrally and hierarchically by enforcing detailed operation procedures that are the result of long term research by multiple specialists. On the other hand they are prone to unexpected failures and so must be managed locally by workers who can respond to serious contingencies. According to Perrow this is a contradiction that shows that some technologies cannot be managed so as to prevent losses due to accidents. Perrow calls these `normal accidents'. This is a statement of technological pessimism and is one that calls foe the aggressive use of the `precautionary principle' in rejecting technologies that cannot be proved safe. Since this is true of most modern technologies it seems as if society must give up the benefits of modern technology in order to remain safe.
However there are many large complex technological systems that function safely. Pool uses the research of Berkeley political science professor Todd a Porte to show this. La Porte discovered may organizations that were managing large scale technologies in a very safe and efficient manner. The characteristic of these organizations is that they combine the properties that Perrow said wee incompatible. The combine a centralized hierarchical control of best practices with distributed local control able to cope with contingencies. La Porte shows how these function in the operation or the US air traffic control systems, military organizations such as aircraft carriers, large chemical manufacturing companies such as Dupont. These overlay a central concern with best practices with an educated workforce who are expected to montitor their own activities, communicate and learn.
This insight demonstrates the technological pessimism inherent in analyses like Perrow's can be overcome. Society can shape itself to be able to benefit from modern technology. Since this benefit will derive from the actions of an educated, self-initiating, learning middle class, technology can also indirectly create social good.
This is book well worth reading. One fault in the book is that Pool does not outline his argument anywhere. In no one pace does he give a clear summery of his ideas. An introduction and a final summary would have improved the book. Nevertheless this is a book this it found to be full of insight. It one that is well worth reading.
By F. Lybrand (Chapel Hill, NC US)
Beyond Engineering is the brightest of the many shining stars that make up the Sloan Technology Series. It is easily the most educational, enlightening and thought provoking ("The One Best Way" by Kanigel being a close second) of the series, and will be the barometer by which I personally measure all future popular technology books. Mr. Pool looks at the way in which technology and society shape each other by looking at eight key elements of these interactions. These areas form the chapters of Beyond Engineering, with Mr. Pool frequently using many poignant technological case studies, biotechnology, steam powered automobiles, the Xerox Alto, and many others. The recurring case study which unites the book is that of the nuclear power industry in the U.S. Despite the non-chronological nature of this story, it is told thoroughly, using just the right amount of technical explanation to explain without overwhelming.
Indeed, Mr.Pool began his book as a history of the US Nuclear Power Industry, but changed his topic as several other authors beat him to it ("Nuclear Choices" by R. Wolfson and "Nuclear Renewal" by R. Rhodes). It is a good thing they did, otherwise he would not have looked at this as merely a case study, in which to frame socio-technological interaction. The eight areas that are covered; momentum, idea creation, business, complexity, choices, risk, control and trade-offs are very quickly paced and liberally sprinkled with very poignant references. His thematic review of the subject matter is similar to the author Lisa Jardine's histories of the Renaissance and Scientific Revolution. The most frequently referred to text is Kuhn's classic "The Structure of Scientific Revolutions." This book could be viewed as the technological adaptation of Kuhn's scientific applications.
There are no ways in which the text disappoints, and it would be difficult to endorse it any more enthusiastically than I am. This book will be of benefit to anyone that works in technology, has a general interest in that area, is curious about nuclear power, or is simply looking for a good book.
By G. DeRome (Greendale, USA)
The author admits that he originally started out to write a book on the nuclear power industry. It is obvious that that is where his interest and knowledge lie. I found myself skipping over lots of the details of the history of this industry. His stories and observations about the origin of the electric light bulb and other inventions by Thomas Edison don't seem very profound and have been told elsewhere. Time and again he seemed to be leading the reader to a hypothesis, theory, or conclusion, but then fizzled out on it. I would recommend skimming this book and looking for the few stories or subjects that you might be interested in.
The author does make a case for examining a technology in its infancy in order to best plan how society should use it, but, given market forces and corporate greed as it is today, this is very unlikely to happen.
Images Product
Buy Beyond Engineering: How Society Shapes Technology (Sloan Technology Series) Now
Digital Laboratory Multimeter
Buy Low Price From Here Now
High accuracy of +/-(0.05%+1) DCV and other advanced features make this unit ideal for laboratory applications including: 79999 count backlit display with bar graph, True RMS, RS 232 computer output (cables and software included), Auto Ranging Max/min/avg, Peak/min/max, Sleep mode, Continuity, Capacitance, Conductance, Frequency, Relative mode, Duty cycle, Hold, AC Current, Case with integral molded rubber sides.
Readmore
Technical Details
- DC Voltage: 80mV/800mV/8V/800V/1000V- AC Voltage: 800mV/8V/800V/1000V
- AC/DC Current: 80mA/800mA/8A/10A
- Resistance: 800/8K/80K/800K/8M/80M
- 79999 count display
See more technical details
Images Product
Buy Digital Laboratory Multimeter Now
Tuesday, March 2, 2010
Radiation Meters, Sper Scientific - Model 840026 - Each - Model 840026
Buy Low Price From Here Now
Excellent for scanning lab work areas and clothing for low levels of gamma, beta and x-ray radiation. Can also be used as a personal monitor in areas of potential radiation exposure. Rugged, weatherproof meter features easy push-button operation. Uses a Geiger-Mueller tube detector, calibrated against equipment whose calibration is traceable to the National Institute of Standards and Technology. Also calibrated in accordance with NRC standards and regulations. Radiation meter 57800-212 registers 0.1-10mR/hr. (milli-Roentgen), on a unique logarithmic scale. Audible clicking will increase with the amount of background radiation. Beeping begins at 20mR/hr., increasing in frequency in proportion to the radiation level. Model 57800-231 is similar to 57800-212, but with a broader scale of 0.0-200mR/hr. Can also be recalibrated to ensure NRC standards. For use in applications where radiation may be present in greater than trace amounts. Dimensions: 16.8Lx8.2Wx3.4Hcm (65/8x31/4x13/8"). Weight: 240g (8.5oz.). Ordering Information: Supplied with a 9V battery, which lasts 50 hours at normal background levels.
Readmore
Technical Details
- sper scientific no.: 840026. scale: 0.0-200 mR/hr..- Manufacturer: Sper Scientific - Model 840026 - Unit: Each
- Radiation Meters, Sper Scientific
See more technical details
Images Product
Buy Radiation Meters, Sper Scientific - Model 840026 - Each - Model 840026 Now
Sper Scientific - Alarm Thermometer - 800040R
Buy Low Price From Here Now
Readmore
Technical Details
See more technical detailsImages Product
Buy Sper Scientific - Alarm Thermometer - 800040R Now
Monday, March 1, 2010
Waterproof Do Meter Pen (Dissolved Oxygen) By Sper Scientific
Buy Low Price From Here Now
Measures dissolved oxygen to determine water quality in environmental testing, labs, industrial and municipal waste water, aquariums and fish hatcheries. Designed for simple one-hand operation with automatic temperature compensation and calibration to air. The polographic probe has a built in temperature sensor and easy to replace pop-off probe heads. Simultaneously displays dissolved oxygen and temperature readings. Also holds readings and recalls minimum and maximum. IP-67 water proof. Comes ready to use in a soft carrying case with belt loop, two spare probe heads, electrolyte and 4 AAA batteries. Dim: 8 x 2 x 1½" (180 x 40 x 40 mm). Weight: 6 oz (175 g).
Readmore
Technical Details
- Range: 0 ~ 20.0 mg/L- Resolution: 0.1 mg/L
- Accuracy: ±0.4% mg/L
- IP-67 water proof
- 5 YR Warranty
See more technical details
Images Product
Buy Waterproof Do Meter Pen (Dissolved Oxygen) By Sper Scientific Now
Subscribe to:
Posts (Atom)