Anyone who's ever flown knows the drill before take-off. Seatbelts on and turn off all electronic devices. However according to a study conducted by U.S.A Today more people are refusing to turn off their electronic devices even during take-off, flight and landing. What are the effects of these electronic devices to a plane? Will they really cause a plane to drop out of the sky?

Not really, at least according to new tests conducted by EMT Labs, an independent testing facility in California. Tests showed that electric emissions from Amazon's e-reader Kindle only equals the electric emissions thrown off by an electric razor or a portable voice recorder. This is significant because the U.S. Federal Aviation Administration allows passengers to run electric razors, or personal voice recorders to run during take-off. The F.A.A requires that a plane should withstand up to 100 volts of electrical interference. The Kindle, electric razor and voice recorder only throw off about 0.00003 of a volt.

"The power coming off a Kindle is completely minuscule and can't do anything to interfere with a plane," said Jay Gandhi, chief executive of EMT Labs, told New York Times reporter Nick Bilton. "It's so low that it just isn't sending out any real interference."

Not even running hundred of Kindles would add to the electric interference.

"Electromagnetic energy doesn't add up like that. Five Kindles will not put off five times the energy that one Kindle would. If it added up like that, people wouldn't be able to go into offices, where there are dozens of computers, without wearing protective gear," said Kevin Bothmann who did the testing at EMT Labs.

Despite the results of the EMT Lab tests, aviation experts were quick to defend the no electronic devices rule. According to a confidential report from the International Air Transport obtained by aviation journalist Christine Negroni, the use of electronic devices on commercial aircraft interfered with flight deck operations in 75 instances over seven years. Although electronic devices will not cause a plane to crash they can create a distraction for the flight crew. Phones, iPods, MP3 players, laptops and portable games interfere with all cockpit systems including flight controls, communication, navigation and emergency warnings.

Clearly there needs to be more studies and even a revision of what electric devices can affect a flight deck. Kindles and other e-readers don't have the same transmitter as smartphones or tablets so perhaps e-readers could be allowed. But in this case it's better to err on the side of caution. Do you really want to risk your life because you wanted to finish reading your latest e-book? Until more experts can weigh in on this, turn off your electronic devices during take-off.