The lower one captures longer wavelengths that have passed unperturbed through the upper, and also any lower-energy light that has been re-emitted within the top layer and somehow escaped.
In America, there is certainly some home-grown resistance to GM food, but consumers are generally unperturbed by having GM crops in their backyard or on their dinner plates.In Europe, opinion polls suggest that public attitudes towards GM food have mellowed from outright distaste at the end of the 1990s to cautious uncertainty.
It sits there still, nestled beneath three cheese-domelike bell jars in a safe that can be unlocked (though it rarely is) only by turning a set of three keys, each entrusted to a high-ranking BIPM dignitary.Despite such precautions, the international prototype does not rest entirely unperturbed.
The map is constructed by assuming that the motions of all the bodies are unperturbed for a given short time but are periodically "kicked" by the perturbing forces for only an instant.
There weren't too may other scowling faces to be seen in the hotel we stayed at, with most guests happy with their lot and unperturbed by the fact that their all-inclusive holiday meant they did not get the chance to sample other cuisines away from the hotel.
Then, over our heads, came the soft swoop of a Magellanic horned owl, a glamorous giant of a predator, which seemed unperturbed by our presence in his fiefdom.
"Unperturbed by their lack of stature, they're more than happy to give you a scolding if you do something they don't approve of.
It wasn't long before we stumbled upon a hungry turtle, chomping away, unperturbed by the captivated audience of divers: you can see why people flock here to learn to dive.
Kasich, who said repeatedly over the weekend that his final decision over whether to run by president would be guided by God, appeared unperturbed by the attacks from the right of his party.
He was there just a moment, and my mother was unperturbed – as she says, when you talk to people openly and honestly about ghosts, many have had similar experiences.
The Iraqi regime was unperturbed by American and British attempts to co-ordinate Iraq's fractured opposition-in-exile but a row loomed with the UN's inspectors over documents that Unscom says are missing.See article: Iraq and its oppositionA veteran Iranian politician, Dariush Forouhar, and his wife were stabbed to death.
