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  • They reported that during piercing, the yogi showed increases in low-frequency EEG activity, primarily sub-delta, delta, and theta, a pattern of brain waves suggesting that the yogi had somehow turned off his brain to external as well as internal stimuli.

    The Sacred Promise

  • Louis Slesin, editor of Microwave News, said the study will lead to more questions about the effects low-frequency radiation can have on body tissue.

    Cellphone study shows one-hour exposure changes brain activity

  • Some people have low-frequency tinnitus, when they think they can hear humming from fridges or road noises – check if other people can hear the same noises; if they can it isn't tinnitus.

    Dr Luisa Dillner's guide to . . . Tinnitus

  • Tomorrow afternoon, my friend and I are presenting on our work with PAPER, the low-frequency array (prototype, so far) to detect hydrogen from the early universe.

    New Year Round-up!

  • CRIRES works in the infrared band of the spectrum, but other spectrometers read radiation sources ranging from low-frequency radio and microwaves to visible “white” light and to higher-frequency ultraviolet and X-ray.

    First Contact

  • And active-noise reduction headphones like the Bose series generally work for low-frequency sounds, "not the noise in the most dangerous frequency range," Mr. Berger said.

    Sounds Like Teen Spirit

  • Guinness says the loudest animal sounds are the low-frequency pulses made by blue whales and fin whales when they communicate with each other — sounds that reach 188 decibels.

    Smokey the cat makes Guinness Records for loudest purr

  • ATLANTA—Advanced radar, a new satellite, lightning-tracking antennas and low-frequency microphones are among the technologies scientists are developing to warn people earlier about approaching tornadoes.

    Technology Offers Hope for Detecting Tornadoes Sooner

  • The low-frequency gamers played passive, victimized roles in their military dreams, which were more threatening than those of frequent players.

    Week in Ideas: Christopher Shea

  • It then quoted the town deputy mayor as saying that due to "the violent protests and the uncertainty of low-frequency noise" coming from the turbines, the town would "not expose our citizens" to large wind turbines.

    Robert Bryce: If Gov. Jerry Brown Wants to "Crush" Opponents of Wind Energy, He'd Better Pack a Lunch


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  • a radio-frequency band or a frequency lying between 300 and 30 kilohertz


    August 3, 2009