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2. Mind machine - Wikipedia

   en.wikipedia.org/wiki/Mind_machine

   A light and sound machine with headphones and strobe light goggles. A mind machine (aka brain machine or light and sound machine) uses pulsing rhythmic sound, flashing light, or a combination of these. Mind machines can induce deep states of relaxation [1] or concentration. [2]

3. Noise pollution - Wikipedia

   en.wikipedia.org/wiki/Noise_pollution

   Understanding sound pressure levels is key to assessing measurements of noise pollution. Several metrics describing noise exposure include: Energy average equivalent level of the A-weighted sound, LAeq: This measures the average sound energy over a given period for constant or continuous noise, such as road traffic. [12]

4. Sound - Wikipedia

   en.wikipedia.org/wiki/Sound

   In physics, sound is a vibration that propagates as an acoustic wave through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain. [1]

5. Fifth grade - Wikipedia

   en.wikipedia.org/wiki/Fifth_grade

   Fifth grade (also 5th Grade or Grade 5) is the fifth or sixth year of formal or compulsory education. In the United States, this is mostly the last grade of primary school, but for some states, it could be the first year of middle school. Primary school generally goes from Kindergarten and ends in fifth or sixth grade. Students in fifth grade ...

6. Bill Belichick reportedly had 'interest' in returning to Jets ...

   www.aol.com/sports/bill-belichick-reportedly-had...

   Bill Belichick continues to be full of surprises. Last week he shocked pretty much everyone when he took the head coaching job at UNC, bringing his brand of football to a college team for the ...

7. Braden Smith goes off as No. 21 Purdue tops Toledo

   www.aol.com/braden-smith-goes-off-no-011459379.html

   Braden Smith set career highs with 34 points and six 3-pointers as No. 21 Purdue pulled away from Toledo for an 83-64 victory in a nonconference matchup on Sunday night in West Lafayette, Ind.