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Why that wearable light meter is SunSprite! And it’s sounding a little heroic in entrepreneur and journalist Henry Copeland’s wonderful account of its birth and development. Along the way, Henry gives a great summary of the science of light and mood. We encourage you to have a look at it. You can also follow his ongoing discoveries about what light is bright and what light is not as he takes his SunSprite out for a spin: Want to see a SunSprite in action with some real world data from a cloudy day? Check out this Instagram post. We’re so glad that Henry heard about SunSprite from two of his friends.