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To overcome this limitation, we propose using smartphones’ built-in accelerometers to measure proper acceleration during free-fall experiments ... (2), we can derive an important consequence of air ...

This advertisement has not loaded yet, but your article continues below. Halifax Regional Police say the closure of the Grand Parade in downtown Halifax on Wednesday morning was the result of someone ...

International Viewpoint, the monthly English-language magazine of the Fourth International, is a window to radical alternatives world-wide, carrying reports, analysis and debates from all corners of ...