Negative and positive ions have been shown in studies to kill germs, while the specific mechanism is unknown, and some experts believe the germ-killing may be due to other factors. In any event, no proof exists that salt lamps have this effect. They may give off a glow when electricity passes through them, but this is not harmful.
The virus theory for salting crops was popularized in the 1920s when it was believed that certain diseases were caused by viruses. Scientists today know this is not true, but it still is common for farmers to salt their fields to prevent disease. Salting works by desiccating soil (dry out the roots), which makes it harder for the plants to infect themselves with pathogens (disease-causing organisms such as bacteria or viruses). This does not mean salting will work on every plant problem, but it is effective against many problems including cedar apple bug damage to corn and soybeans. Salt should not be used as a cure-all for health issues, however; if your soil is lacking in nutrients, then salting it will do little to help your plants grow.
It is also important to note that salting will not protect plants from pests such as insects or herbivores (animals that eat plants). Pesticides are the best way to control these problems.
Finally, salting will not promote growth.
Himalayan salt lamps are said to emit negatively charged ions while water molecules in the air are drawn to - and then evaporate off - their heated surface. Those who believe in the health advantages of these lights attribute a large part of their success to negative ions. Negative ions are used by scientists to describe any ion that has an opposite charge to that surrounding it. They are found in nature and are also created in some laboratory settings. Positively charged particles are attracted to negative ones, which is why negative ions are often called "anti-atoms" for humans.
Salt lamps were originally developed as a way to simulate the effects of sunlight on plants without actually exposing them to light waves. As they heat up in the dark, salt lamps produce negative ions as well as small amounts of ultraviolet radiation. Some people claim that these negative ions have a beneficial effect on human health, so Himalayan salt lamps are marketed as being good for your mental as well as your physical health.
Negative ions are known to provide protection against pollution and disease. Studies have shown that people living near airports or high traffic roads tend to have lower rates of respiratory problems than those who live far away from such sources of pollution. Scientists believe that negative ions may help remove toxic substances from the body through the lungs. A study conducted at Stanford University found that healthy individuals exposed to negative ions for two hours per day improved their memory performance more than those who were not given negative ions.
Nature does not make salt lamps harmful in any manner. However, they can be dangerous if not used properly. Salt lamps should never be left unattended and should not be placed too close to anything flammable such as furniture or fabrics.
People who are allergic to iodine may have an adverse reaction to using a salt lamp. Because of this, anyone who knows he or she has such a sensitivity should not use a salt lamp unless told otherwise by their doctor.
Salt lamps contain sodium for light emission and chlorine for disinfection. Both are highly reactive substances that can cause damage to other materials if they are used improperly. Chlorine is also toxic if it gets into your eyes so wear protective eyewear when working with salt lamps.
People who work with salt lamps should take special precautions to protect themselves against exposure to these chemicals. Clothing should be worn that will protect skin from chemical burns and any hair should be secured back away from the face.
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Overexposure to positive ions lowers the blood and oxygen flow to the brain, which can result in inconsistent sleeping patterns. A Himalayan salt lamp's negative ions are supposed to reverse this effect, making them a popular sleep aid. These lamps are also known to improve mood and relieve stress. Salt itself is not toxic, but the glass container of a salt lamp can be if it breaks.
As with all lamps, there is some evidence that salt lamps help people sleep better. But because high-quality sleep is important for health, any device used to assist with sleep needs to be evaluated by your doctor before you use it. For example, lamps may not be suitable for people who suffer from insomnia or other disorders of sleep regulation.
Lamps contain metal wires that heat up when electricity is passed through them. This wire heating causes electrons to move between atoms in the metal, leaving behind negative ions. Ions are the only way light can escape a lamp; without them, the inside of the lamp would be completely opaque.
People have used salt as a light source since the 16th century. The first electric lights were similar to modern halogen lamps except that they used carbonized bamboo instead of filaments. These lamps required constant maintenance to keep them working properly.
No Salt lamps do nothing except provide a wonderful warm color of light. All's lovely and soothing, but that's about it. The salt lamp has no impact as long as your plants are getting enough sunshine. If they're not, then you'll need to boost their exposure or look for another type of plant.
Too much salt can, in fact, kill beneficial microbes. Sodium chloride (commonly called salt) is used as a preservative in food because of its ability to prevent bacterial growth. Too much salt, however, can be just as harmful to plants as too little; indeed, it can be lethal. When the soil becomes saturated with water and salt does not get washed away, the excess salt can kill off the microscopic organisms that are essential for healthy soil.
Salt blocks water absorption by crops' roots, which can cause them to die from dehydration. This is especially problematic for small fruits and vegetables that cannot be harvested before they collapse from lack of water. Salt also promotes the growth of fungi and other pathogens that can destroy crops. In addition, when salt accumulates in soil at levels higher than what's recommended by your local agricultural department, this can lead to salinization- the permanent alteration of soil quality due to excessive sodium concentrations- which can have negative effects on future crops.
The amount of salt needed to kill off beneficial microbes and harm plants varies depending on the type of soil and crop, but generally, you should avoid adding more than 1/4 cup of salt per quart of water up until about two weeks before harvest.