The filament in a light bulb is housed in a sealed, oxygen-free chamber to prevent combustion. In the first light bulbs, all the air was sucked out of the bulb to create a near vacuum -- an area with no matter in it. Since there wasn't any gaseous matter present (or hardly any), the material could not combust.
Sertraline is used for a number of conditions including: major depression, obsessive-compulsive disorder (OCD), body dysmorphic disorder (BDD), posttraumatic stress disorder (PTSD), premenstrual dysphoric disorder (PMDD), panic disorder and social phobia (social anxiety disorder).
Guest. what is hydroxyz hcl 10 mg used for. Loading... Guest. hydroxyz hcl (Hydroxyzine) is used for the short-term treatment of nervousness and tension that may occur with certain mental/mood disorders (e.g., anxiety, dementia).It is also used to treat itching from allergies and other causes (e.g., reactions to certain drugs).uest. hydroxyz hcl (Hydroxyzine) is used for the short-term treatment of nervousness and tension that may occur with certain mental/mood disorders (e.g., anxiety, dementia).