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  2. Electromagnetic radiation and health - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_radiation...

    The field strength of electromagnetic radiation is measured in volts per meter (V/m). [ 2]: 139. The most common health hazard of radiation is sunburn, which causes between approximately 100,000 and 1 million new skin cancers annually in the United States. [ 3][ 4] In 2011, the World Health Organization (WHO) and the International Agency for ...

  3. Active listening - Wikipedia

    en.wikipedia.org/wiki/Active_listening

    Active listening is the practice of preparing to listen, observing what verbal and non-verbal messages are being sent, and then providing appropriate feedback for the sake of showing attentiveness to the message being presented. [ 1] Active listening is listening to understand. [ 2] This form of listening conveys a mutual understanding between ...

  4. Noise barrier - Wikipedia

    en.wikipedia.org/wiki/Noise_barrier

    A noise barrier (also called a soundwall, noise wall, sound berm, sound barrier, or acoustical barrier) is an exterior structure designed to protect inhabitants of sensitive land use areas from noise pollution. Noise barriers are the most effective method of mitigating roadway, railway, and industrial noise sources – other than cessation of ...

  5. Olfactic communication - Wikipedia

    en.wikipedia.org/wiki/Olfactic_communication

    Olfactic communication is a channel of nonverbal communication referring to the various ways people and animals communicate and engage in social interaction through their sense of smell. Our human olfactory sense is one of the most phylogenetically primitive [ 1 ] and emotionally intimate [ 2 ] of the five senses ; the sensation of smell is ...

  6. Communication noise - Wikipedia

    en.wikipedia.org/wiki/Communication_noise

    Communication noise refers to influences on effective communication that influence the interpretation of conversations. While often looked over, communication noise can have a profound impact both on our perception of interactions with others and our analysis of our own communication proficiency. Forms of communication noise include ...

  7. Does staring at screens ruin your eyes? - AOL

    www.aol.com/article/2014/02/27/does-staring-at...

    We've all grown up thinking that sitting too close to the television is damaging to our eyes ... but that might not be the case. Technology spawns lots of confusion ... and a few affectionately ...

  8. Models of communication - Wikipedia

    en.wikipedia.org/wiki/Models_of_communication

    Many models of communication include the idea that a sender encodes a message and uses a channel to transmit it to a receiver. Noise may distort the message along the way. The receiver then decodes the message and gives some form of feedback. [1] Models of communication are simplified representations of the process of communication.

  9. Lasswell's model of communication - Wikipedia

    en.wikipedia.org/wiki/Lasswell's_model_of...

    This makes the process more complicated since each participant acts both as sender and receiver. For many forms of communication, feedback is of vital importance, for example, to assess the effect of the communication on the audience. [17] [12] However, it does not carry the same weight in the case of mass communication. Some theorists argue ...