Chemical levels should be maintained in the following ranges for a well-balanced saltwater pool: Calcium Hardness: 180-200 ppm Stabilizer level: 50-80 ppm Alkalinity: 70-80 ppm pH: 7.6 The best ...

Images, and the devices that capture them, are my focus. I've covered cameras at PCMag for the past 13 years, which has given me a front row seat for the DSLR to mirrorless transition, the ...

The two speedy executions and two death sentences (one suspended) meted out to several men who committed mass-casualty attacks late last year have attracted thoughtful commentary from Chinese ...

Each material has properties that make them good for specific tasks, eg aluminium is lightweight and doesn’t rust, making it suitable for drinks cans. The properties of materials must be ...