It is dangerous to leave light bulb sockets alone. Because of their high enough voltage to produce significant electrocution injuries, they offer a danger of electrocution and a fire hazard. You don't want to get electrocuted or have your home destroyed by a fire caused by an electrical spark. Light bulbs also contain chemicals that are harmful if exposed to heat or open flames. The safest thing to do is remove damaged or old light bulbs from the socket. Dispose of them in a trash can instead of putting them in your regular household waste.
Light bulbs emit ultraviolet (UV) radiation into the environment when they are on but also while they are still warm. This UV radiation is what causes sunburn after hours without sunlight. It can also cause skin cancer. Young children, older people, and those with dark skin are at risk for developing skin cancers because their bodies are not used to sunlight like adults are. People who work in labs where they test chemicals that may be toxic in small amounts but can cause cancer if they are absorbed through the skin often have higher rates of skin cancer.
You should always use protective clothing and equipment when working with electricity. This includes wearing rubber-based shoes when possible, having a ground wire attached to your body, and using safety switches. If you work with electricity frequently, consider taking training courses so you know how to handle situations safely.
There is no electrical danger in leaving a bulb half unscrewed in a socket, but if it is too loose, it may fall and shatter, posing a hazard. A partially unscrewed bulb is often safer than an empty socket, which might spark if dust or lint comes into touch with it. However, note that energy may be wasted if the lamp remains illuminated though its cover is removed.
If you are sure that the bulb is not going to be touched or moved for some time, you can remove it safely. First, turn off the power at the wall outlet where the socket is located, then pull out the old bulb. Locate the metal base of the old bulb and bend it back until it breaks away from the socket. Do not try to pull it out straight up; this could break the glass bulb inside the plastic casing. Instead, twist it out of the way and drop it on the floor. Be careful not to cut yourself on the glass if it breaks.
Now you can put in your new bulb and screw it down firmly. Make sure that you follow all the instructions that came with the lamp for removing its cover and inserting the bulb itself. Some lamps require you to push a button or switch to activate the power again after changing the bulb, so be sure to read all the instructions that come with your lamp.
Light bulbs decay over time due to exposure to heat and light.
No, it isn't secure. A spark or fire might be caused by lint, dust, a moth, or flying bugs. It is preferable to leave a bulb in the socket or insert a plug adaptor rather than leaving the socket open. This will help prevent accidents.
The fragility of incandescent lights is a major safety problem. They are composed of incredibly thin glass, so if one bursts or fractures, lethal shards of glass would fly everywhere. If a bulb shatters while still screwed into a socket, attempting to remove it might be hazardous. There have been several deaths due to people trying to pull broken lamps out of their sockets.
In addition, burning the filament inside a bulb produces toxic gases such as carbon monoxide. These hazards should be considered when choosing alternative lighting for your home.
There are many alternatives to incandescent lights, including fluorescent, LED, and mercury-free compact fluorescents (CFLs). All of these options are safer for the environment and for your health.
All fluorescent lamps contain small amounts of mercury. While this element does not present a risk if it is not exposed to air, it should never be thrown away. Instead, dispose of it in a sealed jar at a local recycling center.
Fluorescent lights remain on even when you are not using them, which can cause sleep problems for people living in the room with the lamp turned on. However, newer types of fluorescent lamps do not emit much radiation when they are off. They also last longer than traditional lamps and require less maintenance.
You might keep the dead bulb in place as a filler. Because dead bulbs consume no power, they have no effect on your electric bill. They are completely safe to use as long as the glass on the bulb is not cracked.
When you remove a dead bulb, its glass stays hot for several minutes after the electricity is off. If you leave the bulb in place but unplugged, these remaining hot surfaces could cause injuries if someone touches them. This is why professionals do not leave live bulbs in place when their coverage is over. They will usually take off the casing first so there are no hot objects lying around.
The only time I would recommend leaving a bulb in place after it has died is if it is being used as a filler. There are times when electric companies will replace non-functioning bulbs with same-type replacements at no charge. So if this does happen and you feel like you've saved some money by doing so, then great!
However, if the intention was to create a fake light source, then leaving the bulb in place could be dangerous. People might assume that the house is already dark out and go about their business without checking all the lights; therefore, they might walk into an exposed wire or sit on one while trying to figure out how to turn on the lamp.
In most cases, merely cleaning the light bulb and socket before insertion is sufficient to keep a light bulb from becoming stuck in the socket. Because most typical lightbulb bases are made of aluminum, they are coated in aluminum oxide, which is stable and unlikely to corrode. Having said that, if your bulb's base is made of steel or plastic, you may need to use a bit of lubricant to ease its insertion into the socket.
If cleaning doesn't work, try twisting the bulb gently in a direction away from your body. This should free it up enough to be slipped into the socket.
If this still doesn't work, try pushing on the filament end of the bulb with your thumb while pulling the base out of the socket. This should release any obstruction within the socket.
Last but not least, if all else fails, take your lamp to your local lamp shop and have them help you out. They will know how to remove any obstructions so that you can put in new bulbs without fear of breaking something off in the process.