Search results
Results from the WOW.Com Content Network
An open (single envelope) CFL [12] An encapsulated/closed (double envelope) CFL. Some fluorescent lamps emit ultraviolet radiation. [citation needed] The Health Protection Agency of the United Kingdom has conducted research concluding that exposure to open (single envelope) compact fluorescent lamps (CFLs) for over 1 hour per day at a distance of less than 30 cm can exceed guideline levels as ...
Flicker vertigo, sometimes called the Bucha effect, is "an imbalance in brain-cell activity caused by exposure to low-frequency flickering (or flashing) of a relatively bright light." [ 1 ] It is a disorientation -, vertigo -, and nausea -inducing effect of a strobe light flashing at 1 Hz to 20 Hz, approximately the frequency of human brainwaves .
Other simple remedies include avoiding sudden changes in posture when sitting or lying and avoiding bright lights. Several essential electrolytes are excreted when the body perspires. When people experience unusual or extreme heat for a long time, sweating excessively can cause a lack of some electrolytes, which in turn can cause lightheadedness.
"Avoiding light at night and seeking light during the day may be a simple and effective, non-pharmacological means of broadly improving mental health," the researchers concluded. What experts think
One cause of cataracts is exposure to ultraviolet light. Provided the level of UV emission from lamps is within safe limits, and the lamp a sufficient distance away from the individual, there should be no increased risk of developing cataracts. Photophobia is a symptom of excessive sensitivity to light which affects 5 to 20% of the population ...
It’s important to have a treatment plan that is specific to your needs." Palep maintained: "Overall, at-home LED masks use varying lower frequencies which are only questionably effective ...
Reflex syncope can occur in otherwise healthy individuals, and has many possible causes, often trivial ones such as prolonged standing with the legs locked. [citation needed] The main danger of vasovagal syncope (or dizzy spells from vertigo) is the risk of injury by falling while unconscious.
Night time anxiety can cause you to wake up at an unusually early hour (say, 3 a.m.), feel like you haven’t had enough sleep, and then feel pressure to go back to sleep, explains Virginia Runko ...