Posts Tagged “LED”

Back online after few days on Chinese Mountains I discovered lots of interesting informations about Internet disruptions which occurred earlier this month and impacted more than 90 millions Internet users. Outages were due to up to cuts on up to 9 submarines cables located, for most of them, around the Arabian Peninsula.

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"I Love Bonnie" published on the 12th the excellent "The Submarine Cables - A Complete Guide to the 2008 Internet Outage". The post contains tons of informations and links and provides a detailed review of the events. Media coverage can be found on Renesys site. Steven M. Bellovin professor at Columbia  University analyzed the possible causes of these outages.

Some also speaks, indeed, about conspiracy :wink: 

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jetlagged.JPGJust after posting the article about new safety measures on US aircraft I found an interesting post on New York Times "Jet Lagged" blog titled "Airport Security Folies"

Here after a short excerpt of Patrick Smith article

" Six years after the terrorist attacks of 2001, airport security remains a theater of the absurd. The changes put in place following the September 11th catastrophe have been drastic, and largely of two kinds: those practical and effective, and those irrational, wasteful and pointless.

The first variety have taken place almost entirely behind the scenes. Explosives scanning for checked luggage, for instance, was long overdue and is perhaps the most welcome addition. Unfortunately, at concourse checkpoints all across America, the madness of passenger screening continues in plain view. It began with pat-downs and the senseless confiscation of pointy objects. Then came the mandatory shoe removal, followed in the summer of 2006 by the prohibition of liquids and gels. We can only imagine what is next…."

Continue reading it on NYT website 

On my own opinion, Airport security today is a mix between relevant and must have security measures on a side but also theatrical, annoying and ridiculous measures. Some of these measures are time consuming, put passengers and crew on their nerves for no safety added value. What does really justify them?

  • Government "zero  political risk" (if something happens they will be able to tell that all possible protection measures were already taken) ?
  • Fear factor = better military/law enforcement budget ?
  • Security private experts / companies have highly increase their financial income since September 2001. They certainly not ready to give this golden egg away.
  • Did I speak about million dollars detectors and scanners manipulated by low trained personnel ?    

but do you think air travels are safer to face well prepared, organized and motivated enemies ?

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battery.jpg Passengers will no longer be able to pack loose lithium batteries in checked luggage beginning January 1, 2008 as new federal safety rules take effect. The new regulation, designed to reduce the risk of lithium battery fires, will continue to allow lithium batteries in checked baggage if they are installed in electronic devices, or in carry-on baggage if stored in plastic bags.

Common consumer electronics such as travel cameras, cell phones, and most laptop computers are still allowed in carry-on and checked luggage.  However, the rule limits individuals to bringing only two extended-life spare rechargeable lithium batteries, such as laptop and professional audio/video/camera equipment lithium batteries in carry-on baggage

 
New rules apply to the spare lithium batteries you carry with you:
  • Spare batteries are the batteries you carry separately from the devices they power. When batteries are installed in a device, they are not considered spare batteries.
  • You may not pack a spare lithium battery in your checked baggage
  • You may bring spare lithium batteries with you in carry-on baggage – see our spare battery tips and how-to sections to find out how to pack spare batteries safely!
    (have a look, recommendation for AA batteries is definitively ridiculous).
  • Even though we recommend carrying your devices with you in carry-on baggage as well, if you must bring one in checked baggage, you may check it with the batteries installed.

The following quantity limits apply to both your spare and installed batteries. The limits are expressed in grams of “equivalent lithium content.” 8 grams of equivalent lithium content is approximately 100 watt-hours. 25 grams is approximately 300 watt-hours:

  • Under the new rules, you can bring batteries with up to 8-gram equivalent lithium content. All lithium ion batteries in cell phones are below 8 gram equivalent lithium content. Nearly all laptop computers also are below this quantity threshold.

  • You can also bring up to two spare batteries with an aggregate equivalent lithium content of up to 25 grams, in addition to any batteries that fall below the 8-gram threshold. Examples of two types of lithium ion batteries with equivalent lithium content over 8 grams but below 25 are shown below.
  • For a lithium metal battery, whether installed in a device or carried as a spare, the limit on lithium content is 2 grams of lithium metal per battery.
  • Almost all consumer-type lithium metal batteries are below 2 grams of lithium metal. But if you are unsure, contact the manufacturer!

Indeed this regulation will first be applicable on US registered aircrafts but as usual we may see this new regulation applicable on all International flights. 

Usually all electrical devices, including batteries, are subject to safety certification so either their are considered to be safe or manufacturer has to review quality and safety of its products. 

I really wonder on which basis these new rules are made from. Did anyone saw any incident statistics, reports etc.. (apart Sony made laptop batteries) or is it just one additional constraints air travel passengers will have to deal with.

After lighters and matches in 06, liquids in 07, 08 will add batteries to the restriction list.

All details are here as well as the complete list of items with air travel restrictions

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