WindRay LiDAR

Every spinning turbine leaves an invisible shadow, and the turbines behind it pay for it! Yes, you heard that right! In fact, reports say that wind plants can give up to 20% of their gross energy production to wake losses . ( Source ) So, where does the missing energy go? Well, the answer is that it goes into a slower, choppier stream of air that the next row of rotors inherits, and you can only manage it if you can see it. This is where a scanning wind measurement LiDAR comes in handy because it does exactly that by tracing moving air across a site instead of a single point.​ What is a Wake? When a rotor extracts energy, the air behind it slows down and gets more turbulent, and that region is called the wake. It slowly refills as turbulence pulls faster air down from above, which is why a wake can stretch a long way downwind before it fades. In addition, turbine spacing, wind direction, as well as turbulence all change how much the next machine feels it, so yes, the energy isn'...

Imagine running a quantum experiment that runs for weeks, and then it fails because the light source quietly misbehaved. Well, it might sound like a fictional scenario now, but this happens more often than labs care to admit. In case you are wondering how to buy a laser for Rubidium atom experiments , five specs are definitely worth considering, and they include: linewidth, polarization extinction ratio, power stability, tuning behavior, and environmental toughness. Once you get this right, your single-frequency fiber laser becomes the quietest, most dependable part of your setup, and we are going to talk all about it!​ 1.     Linewidth and Noise: Look Beyond the Headline Number Everyone checks a laser's linewidth first, and they are right to do so. However, the sneaky part is the noise that's hiding at higher frequencies. For instance, in a Rydberg atom study, MIT researchers found that reducing laser phase noise let them prepare a two-atom entangled state with...