Good news for unmanned lawnmower enthusiasts (we know there are at the very least two of you out there). Husqvarna’s latest, the Automower 260 ACX, could be programmed to send you an SMS text message if one thing ought to interrupt the mow job — because typically looking outside to see if your robotic continues to be tending to the lawn is simply a lot to ask. This bad boy gets an hour on a single cost — which needs to be loads of time to take down about half an acre of lawn — and upon returning to its docking station, the battery is recharged in roughly forty minutes.

News stories described the LRAD as a sonic weapon that fired a beam of sound on the pirates and drove them away. What makes sound a weapon? In this article, we’ll evaluate the basics of sound and discuss exactly how the LRAD produces its «beam of sound.» We’ll additionally explore LRAD’s hailing and outillage bosch sans fil warning abilities and other makes use of for sound. The louder a sound is, the more it moves the constructions in your ear. The upper its pitch, the quicker it moves them. Loud or high-pitched noises can cross the threshold of ache, or the point at which a sound is painful. It doesn’t matter what creates it, sound is at all times manufactured from waves.

Instead, the electricity needed to energy the BB2 is produced onboard from condensed hydrogen. The car’s gas cell combines oxygen and hydrogen, which produces a direct electrical present. The motor controller converts this direct current to an alternating present to power the motor. But unlike the BB1, the BB2 does not require recharging. The jury’s still out on precisely what is going to produce the electricity that powers the sports vehicles of the future.