Our customer wrote this professional article as below at this website, https://meaningness.com/sad-light-lumens

It’s five p.m. in late November now. It’s been a gloomy day, and it is completely dark outside. I am working in a room with very bright lights spaced evenly around its periphery. It looks and feels like a sunny May afternoon in here. I feel great, and I will write productively until 8 p.m. Before I discovered sufficiently bright lights, I would be miserable and useless at this time.

This is the second of two web pages about bright light supplementation for improved winter mood and productivity. The first page, explained how and why bright light works, and how to make it work for you. It also explains why most lights sold to treat seasonal affective disorder probably won’t work for you: they are no brighter than a single regular household lightbulb.

This page explains how to get actually bright light, in practical terms. Currently, that is possible only using industrial lighting solutions, typically used for lighting warehouses, parking lots, and football stadiums.