Electricity from the Airwaves

Electricity from the Airwaves

Perpetual motion machines cannot exist, at least according to the Laws of Thermodynamics. Eventually, the energy will leak out and the machine will stop. But if you can provide a machine with an endless external source of energy — such as the sun — it...
They Track Horses, Don’t They? [video]

They Track Horses, Don’t They? [video]

When it comes to the “quantified self” movement, humans aren’t the only ones who can track their health and fitness information. SeeHorse is a company that has created a wearable Health Tech device for horses. When you think about it, this makes a...
Microsoft WearDrive Extends Battery Life

Microsoft WearDrive Extends Battery Life

Wearable devices need power to operate. To make them run longer without having to recharge, designers have a number of options. They can use energy harvesting technology to scavenge energy from the ambient environment, but this can be expensive and may only produce...
Energy Harvesting Key to Wearable Success

Energy Harvesting Key to Wearable Success

If wearable Health Tech devices are to be successful, they are going to have to disappear into our lives. If they require that we plug them in (or place them on a charging station) every night or week or month, it will give people one more reason to not use them. This...
Super-Thin Super-Caps to Power Wearables

Super-Thin Super-Caps to Power Wearables

A battery can hold a relatively large amount of power, but it releases it slowly and can take a long time to recharge. A capacitor can’t hold as much power, but it can recharge very quickly and can also provide a large amount of power in a short time if needed....