having large windows he always turns on the light but artificial light is usually very weak whereas cotard thomas can reach 7000 lux bastions level is just 220 must channel so spends most of his evenings in front of a t.v. or computer screen in addition to being low light they emit primarily blue light this lowers the wake sleep regulating hormone melatonin and reverses his inner rhythm essentially turning back his biological clock and the result for us john is this modest hour by hour exposure to light on a typical working day then just cut in while working in the office we have 2 $100.00 to $220.00 lots which is far short of daylight vite and found that august least what we notice is that he still has a relatively high illuminance after work until he goes to bed. who are. at this so and that he definitely has a negative effect on his sleep wake behavior and. and they got the 5 was. not deemed as a doctor who likewise works with little light most of it artificial. and sometimes with practically none. and come back i'm just a ripe for a night shift saturday night which no one likes to see but i'm