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2. Say Goodbye to Grimy Dishes With the Best Cheap Dishwashers - AOL

   www.aol.com/lifestyle/goodbye-grimy-dishes-best...

   Noise is measured in decibels, or dBA, and a dishwasher’s noise level is almost always included in the specs on a retailer’s website. Anything that’s 44 dBA or less is considered ultra-quiet ...

3. A simplified guide to buying a dishwasher - AOL

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   Best value dishwasher: Bosch. 1. Bosch 300 Series Dishwasher. Dishwashers can range from a couple hundred bucks to a couple thousand, so finding a sweet spot can be tough. The Bosch 300 Series has ...

4. I Tested the July A/C for a Month—Here Are the Pros and Cons

   www.aol.com/tested-july-c-month-pros-194300645.html

   Comparable units to the small July A/C clock in at 52 dB (LG), 56 dB (GE), 54 dB (Toshiba), 49 (Windmill), and 42 (Midea). The Midea unit also costs less. Truly quiet dishwashers , by contrast ...

5. Noise temperature - Wikipedia

   en.wikipedia.org/wiki/Noise_temperature

   The noise factor (a linear term) is more often expressed as the noise figure (in decibels) using the conversion: = ⁡ The noise figure can also be seen as the decrease in signal-to-noise ratio (SNR) caused by passing a signal through a system if the original signal had a noise temperature of 290 K. This is a common way of expressing the noise ...

6. Decibel - Wikipedia

   en.wikipedia.org/wiki/Decibel

   Decibel. The decibel (symbol: dB) is a relative unit of measurement equal to one tenth of a bel ( B ). It expresses the ratio of two values of a power or root-power quantity on a logarithmic scale. Two signals whose levels differ by one decibel have a power ratio of 10 1/10 (approximately 1.26) or root-power ratio of 10 1/20 (approximately 1.12 ...

7. Johnson–Nyquist noise - Wikipedia

   en.wikipedia.org/wiki/Johnson–Nyquist_noise

   Johnson–Nyquist noise ( thermal noise, Johnson noise, or Nyquist noise) is the electronic noise generated by the thermal agitation of the charge carriers (usually the electrons) inside an electrical conductor at equilibrium, which happens regardless of any applied voltage. Thermal noise is present in all electrical circuits, and in sensitive ...