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 | Beneficial Effects of Lightning 
by Ibrahim B. Syed, 
Ph. D.  
 
Al Qur'an is a book of guidance. It 
is also called the book of Wisdom. Qur'aan is not a book of science. However, in 
many verses (about 20 % of the Qur'anic verses) one finds hints or clues which 
have scientific meaning or refer to natural phenomena. For example, verses in 
Surah Rad or Thunder, 13: 1-13, have scientific meaning. The Ayah 12 
reads:  
 
By way Both of fear and hope
" Surah RAD, 13: 12  
 
 
 
Allama Yusuf Ali in his note 1818 
says, "Why look to evil rather than to good? To punishment rather than to 
mercy?--To the fear in the force and fire of the lightning rather than to hope 
of good and abundant crops in the rain which will come behind the lightning 
clouds."  
In Note 1819 he says, " Nay, 
thunder itself which may frighten you, is but a tame and beneficent force 
before Him, declaring His praises, like the rest of creation. Thunder 
thus aptly give the name to this Surah of contrasts, where what we may think is 
terrible is shown to be really a submissive instrument of good in God's hands."  
In Note 3530 one reads, "To cowards,
lightning and thunder appear as terrible forces of nature. 
Lightning seems to kill and destroy where its irresistible progress is not 
assisted by proper lightning--conductors. But lightning is also a herald of 
rain-bearing clouds and showers that bring fertility and prosperity in their 
train."  
Journals publish articles on 
Lightning injury and death by lightning. However, the Qur'an specifically 
mentions "hope" of lightning. It is interpreted as "hope" of good or a 
beneficent force. In other words, Qur'an mentions beneficial effects of 
lightning to mankind. What are the beneficial effects of lightning to mankind? 
The purpose of this article is to answer this question in detail. The Qur'an 
says as quoted above:  
Verily in that (lightning) are Signs 
for those who are wise." 30: 24.  
"After a storm, the air feels clean 
and fresh. Filled with negative ions."  
People often report feelings of 
pleasantness and well being following an electrical storm. Electrical storms are 
generally preceded by higher level of positive ions and followed by higher 
levels of negative ions.  
What are Ions? 
 
Air, like all matter, is made of 
individual molecules. When the outer electrons of two or more atoms of the same 
or different elements join together, the resulting particle is a molecule Each 
of these molecules, in turn, contains smaller particles of positive and negative 
charges (protons and electrons). Under normal circumstances there are equal 
numbers of protons and electrons and their charges cancel out, leaving the 
molecule electrically neutral. However, the negatively charged electrons are 
lighter and more mobile. If they absorb energy from say, intense sunlight, they 
have a tendency to "jump" from one molecule to another. When a negative charge 
jumps from a molecule it upsets the equilibrium, leaving behind more positive 
than negative charges. This molecule is now called a positive ion. 
The electron arriving at the new molecule brings with it an extra negative 
charge. This molecule now becomes a negative ion. When the 
supply of energy is removed, the electrons will return towards the vacated 
spaces and everything will return to balance, and zero charge.  
Molecular oxygen is a prime example 
of the small gaseous molecules in the air we breathe. It remains neutral as long 
as the proton-electron balance is maintained. Because of an equal number of 
protons and electrons, atoms have no charge. However, if an electron is lost or 
gained, the molecule becomes positively or negatively charged respectively and 
an ion is created.  
The simplest way to visualise an air 
ion is as a tiny charge of 'static' electricity carried by the air. This can be 
either positive or negative. The charged particles, or ions, are not merely 
suspended in the atmosphere, they actually are part of the 'fabric' of the air 
itself. The air around you contains billions of tiny, invisible, electrically 
charged energy packets called IONS. Every time you take a breath, ions fill up 
your lungs, and are carried by your blood into every cell in your body. Without 
ions in the air, your body would not be able to process oxygen proper.  
The air we breathe contains molecules 
with electrical charges, both positive and negative. In ancient times they 
probably had other names for this energy such as Chi, Ki, prana, pneuma, elan 
vital and others depending upon the culture involved. Modern science is actually 
quantifying this form of extremely valuable and life enhancing energy. 
Lack of or imbalance of minute 
electrified particles, called ions, and affects the environment, in which we 
live and breathe. Research has shown that most of us who live, work and travel 
in closed spaces suffer some degree of negative ion starvation or positive ion 
overabundance. This has become extremely evident to NASA in their space travel 
program.    
Natural abundance
 
In nature, ions are generated in 
abundance wherever energy is transferred into the air, by friction within wind 
and rain, and surf. Certain events occurring in nature, such as lightning 
discharges and falling water and air friction can cause electrons to be torn 
loose from a molecule. These "orphan electrons" are then, 'adopted' by other 
nearby molecules, transforming these molecules into negative ions. The parent 
particles become positive ions. Negative ions are themselves the electrical 
energy carriers of the air. Some examples of nature's ion generators are solar 
(ultraviolet radiation) and cosmic radiation, air friction, lightening, falling 
water (the splitting of water into droplets by waterfalls), sea beaches-ocean 
surf and waves, evergreens and the earth's radioactivity (by natural radiation 
in rocks and soil).  
Electricity and Air. 
It was RCA's Dr Hansell who, in 1932, 
stumbled on the behavioural effects of artificially generated ions. He noticed a 
startling swing in the moods of a fellow RCA scientist who worked beside an 
electrostatic generator. Some days the scientist finished the day alert and in 
bubbling good spirits. On the other days he was rude, ill tempered and 
depressed. Dr Hansell investigated and found that the scientist was happy when 
the generator was adjusted to produce negative ions but morose when it was 
producing positive ions. Since then advances in technology have enabled 
scientists to study the process in much more detail and thousands of scientific 
papers have been published on the subject.   
Winds of depression 
The natural production of ions may 
result from solar or cosmic radiation or the more mundane friction between air 
masses such as between rapidly moving hot, dry air and the ground. These are the 
"Witches Winds" that cause such discomfort periodically to the population in 
certain areas of the world. In these areas, the seasonal winds that blow have 
become legendary, bringing little short of misery and chaos to many of the local 
inhabitants. In these places it has been known for generations, that the winds 
bring feelings of anxiety, stress, depression and sleepless nights. Statistical 
studies show that when they blow, more road accidents happen and suicide rates 
increase. So real is the problem that it has been known for judges to take this 
into consideration when sentencing and for hospitals to postpone some operations 
until the winds cease!   
In fact winds like these are 
surprisingly common across the world:  
The Foehn is a dry southerly 
wind which blows from the Alps across Switzerland and southern Germany. There is 
the Sirocco in Italy and the Mistral in southern France. (It is 
said that Winston Churchill avoided visiting the Mediterranean coast when the 
Mistral was blowing).  
In the Middle East they have 
Sharav - also known to the Arabs as Hamsin (the fifty days wind). 
Western Canada and USA have the Chinook - and in the area around 
California blow the Santa Ana and winds known in Indian mythology as "The 
Bitter Winds".  
The Swiss Meteorological Institute 
made extensive studies into the problems arising from their local wind, the 
Foehn, and in 1974 published a list of physical and mental effects it was found 
to cause. These included:  
 
What was the 
difference between the air carried in these winds, which could cause so much 
distress, and the air in the renowned health resorts, which had gained a 
reputation for their special qualities of relaxation and healing? It was later 
discovered that this unique quality in the air is its electrical charge, which 
it carries in the form of ions. Paradoxically, if it carried a 
positive charge, people (and animals for that matter) felt negative 
and suffered the symptoms of the notorious oppressive winds.   
 
Positive ions - 
oppressive 
Many people find the 
atmosphere before a storm is 'heavy' and oppressive. This has been attributed to 
the high levels of positive ions that build up in the air, which are also 
believed to be the trigger of "storm-sensitivity" in asthmatics and many other 
people. Certainly, in laboratory conditions, similar symptoms could be triggered 
in subjects when they were exposed to abnormally high levels of positive ions. 
In the hours before the storms arrived, hundreds of people had reported to 
hospital with severe asthma attacks. Was it due to positive ions?  
Negative ions - 
refreshing 
 
Places we find 
refreshing such as in the mountains and near waterfalls and seashores - where 
health resorts are traditionally situated - are found to have high 
concentrations of negative ions. But areas with high levels of positive ions 
often make us feel uncomfortable and irritable. 
 
Nature makes 
Negative Ions  
In addition to 
providing you with a rewarding visual experience, waterfalls may also be 
beneficial to your health. A person desiring to enhance his body and mind 
through breathing exercises should do so by a waterfall. In Switzerland a woman 
who suffered from migraine headaches would often go to a small waterfall on the 
River Rhone. She would spend between thirty minuets to an hour by the waterfall. 
"I go there just to breathe. It makes me feel better for hours." Nearly everyone 
would agree that visiting a waterfall is a stimulating, refreshing and 
energizing experience.  
The answer to what 
causes these effects seems to be electrically charged atoms known as negative 
air ions. At a waterfall negative air ions are produced by the energy of the 
falling water. As the falling water breaks up into small droplets, electrons 
(negatively charged parts of an atom) are knocked loose from the water atoms. 
These electrons combine with oxygen atoms in the air to create negative air 
ions. The negative air ions are inhaled into the lungs and absorbed into the 
bloodstream. Negative air ions are not known to permanently cure anything. It is 
believed that they help our bodies by accelerating the delivery of oxygen to our 
cells. Some researchers believe that negative air ions may stimulate cells that 
regulate our bodies resistance to disease.   
On average there are 
1,500 ions are found in a cubic centimeter (roughly the size of a sugar cube) of 
fresh air. Of these about 45%, or 675, are negative ions; the remainder being 
positive ions. At Yosemite Falls in California a reading of 100,000 negative air 
ions per cubic centimeter was recorded.  
Other Sources of 
Negative Ions  
Many people in Europe 
and Australia are aware of the benefits of negative ions to our health. These 
negative Ions are essential for our health and well being. The freshness of the 
air after a thunderstorm, on a mountain top, or by the seaside, are due to the 
high concentration of negative ions in the air. On the other hand, the reduced 
well being one feels in highly polluted areas, cars, factory smog, artificially 
air conditioned offices, or when certain hot dry wind conditions exist, are 
usually due to an unduly low negative ion balance (and therefore high proportion 
of positive ions). 
 
Negative ions can be 
found in billions, on mountain tops, water falls and by the sea. Radioactive 
substances in the earth's crust and cosmic rays cause most ionization. But fire, 
crashing water (like water falls and surf), and plants during photosynthesis can 
produce negative ions as well. They give the air its invigorating freshness, 
which is so good for us.   
Negative Ions in 
Sauna   
The Finnish 
Experience   
Ions and our modern 
lifestyle
  
In this modern life, 
we have created an environment that virtually eliminates negative ions from the 
atmosphere.  Because negative ions are readily attracted to airborne particles, (Which is how they clean the air - by attaching to particles of dust, pollen, smoke or dirt and dragging them to the ground.) every particle of pollution uses up yet another ion. So while there is a higher concentration of ions in the countryside, as you move into towns and cities, the dirt and pollution causes the level to drop dramatically. 
 
Pollution from car 
exhausts, cigarette smoking, overcrowding and even our breathing, all contribute 
to this. 
 
Here are some 
average sample readings of negative air ions taken in various locations: 
  
By a waterfall: 
   50,000 ions per cc. Pure air, very stimulating, exhilarating and 
relaxing, germs cannot live in this air. 
In the mountains:
5,000 ions per cc. Exceptionally fresh, clean and invigorating air, 
"mountain air  
Optimum 1,000 ions 
per cc. the minimum level 
one should sleep, work and live in 
In an average 
modern office: only 50 ions per cc. ( 
As you can see - A city office has probably the worst ion balance you can find!)  
How Ionizers Work
  
Negative ions can be 
be produced by copying any of the ways that nature uses - ultra violet (lamps), 
radioactive sources etc. Indeed a bathroom shower provides a plentiful supply.  
Air ions have two 
qualities:  
 The ions leaving the ionizer are small, high velocity ones. These are found to be most beneficial to health. If they collide with particles of smoke or pollution near the ionizer, they pass on their "static" charge. This particle is then strongly attracted to the nearest "earthed" surface. (which could be a wall or the shelf on which the ionizer is placed - so make sure it is washable!) 
 Out into the room the ions naturally begin to slow down. As they drift, pollutants such as dust, pollen, cigarette smoke and even vaporized substances like aerosol propellants and car fumes are attracted to and cluster around the ions. This has the effect of making the ion grow in size. There comes a point where it is too heavy to be carried in the air, so it falls to the ground. 
 The ability of an ionizer to remove very fine particles from the air makes it extremely valuable for health. Recent studies indicate that the smaller the particle, the harder it is for our immune systems to cope with. So ionizers have a "double action" effect. They excel at removing microscopic particles - the most harmful - and at the same time they restore a "vitality" to the air - which our bodies appear to need for their everyday functioning. 
 
The quoted range of an 
ionizer is usually the distance at which it can maintain a certain concentration 
of ions. (The standard figure is 1000 ions per cc of air - said to be the lower 
threshold level for health purposes). However most ionizers will have a cleaning 
effect over a greater distance.  
A very important point 
to be aware of: A badly designed ionizer may produce ozone, and with it 
nitrous oxide. These are toxic substances and can cause respiratory difficulties 
and stinging eyes (often the very thing they were purchased to cure). The WHO 
(World Health Authority) guidelines, say that the maximum acceptable level of 
ozone is 0.1ppm (parts per million).   
How Negative Ion 
Generators Clean the Air: 
The effect of air ions 
on the human organism has been the subject of much debate. Commercial units are 
available which claim beneficial effects through the generation of negative air 
ions into the atmosphere. Conversely, it has been claimed that an excess of 
positive ions can cause discomfort and symptoms such as headaches and nausea in 
some people.   
The possibility that 
air ions may affect human health has been suggested since the beginning of the 
20th century. In the 1930's Yaglou et al published a series of papers 
demonstrating physiological effects of air ions and showing that air ion 
concentrations varied with diurnal and seasonal patterns. Yaglou suggested that 
air ion control should be considered an important part of indoor air 
conditioning.   Warm dry winds such as the Sirrocco (Italy), Sharkije (Egypt), Santa Ana (California), Hamsin or Sharav (Middle East) or the Foehn ((Central Europe), are associated with a sudden increase in morbidity (health problems). During these winds about 30% of the population were reported to suffer from migraine, depression, moodiness, lethargy or respiratory symptoms. Behaviour changes were reported to result in an increase in accidents and psychological illness. A further 30% suffered less, and about 40% suffered no effects. 
 
According to Sulman 
(Israel) and Kreuger (California) there was some evidence that these health 
changes were due to atmospheric electrical changes, in particular air ion 
concentrations, and the ion polarity ratio (the balance between positive to 
negative air ion concentrations). Their work led to a hypothesis that serotonin 
was involved in a mechanism of interaction between ions and biological systems.
 
Although the 
concentration of air ions is very low (in fair weather, circa 1000 ions/cc for 
negative, and 1200 ions/cc for positive ions), Hawkins (1985) asserts that "the 
evidence that ions do have biological effects is overwhelming." The main action 
seems to be through entry through the respiratory system. Kreuger (1976) reports research by Winsor and Beckett on human adults and children in which high concentrations of positive ions produced congestion in the nose and pharynx, and when prolonged affected the bronchi. 
 Hawkins reports that his own studies confirm a significant beneficial effect of negative ions, positive ions having no effect. He reports that negative ions result in greater improvement for complex tasks than for simple tasks. 
 
Buckalew and Rizzuto 
(1982) found that male subjects exposed to negative ions from commercial ion 
generators for a period of at least 6 hours reported feeling more relaxed and 
less tired. Reductions in irritability, depression, and tenseness, with 
increased calmness and stimulation were associated with negative ion exposure. 
Buckalew and Rizzuto (1984) found no significant effect on performance and 
physiological condition of 24 male subjects after up to 6 hours exposure to 
commercial negative ion generators. No alteration in basic cognitive 
functioning, perceptual-motor performance, reaction time, or grip magnitude, 
pulse, temperature and blood pressure were found. They state that: "There does 
remain the possibility of a physiologic, psychologic or performance response to 
higher concentrations of negative ions, and the need for investigation using a 
treatment-by-levels approach remains. Another direction, given evidence of 
psychological effects of negative ion exposure, is investigating interactions of 
psychological state and performance effects." 
 Fornof & Gilbert (1988) reported that indoor air ion levels affect the reactions of children to stressors. Negative air ionization increased physiological tolerance of stressors and reduced secondary effects of stress in behaviour and performance. Improvement in conceptualization and attention span coincided with the indicators of reduced stress. Their results confirmed that people of different sympathetic nervous system reactivity respond differently to air ion levels. Autonomic nervous system stability was apparently improved. 
 
In a 1984 review 
Kellogg reports work by various authors on the clinical use of air ions, 
especially in the treatment of burns and asthma. For example, Kornblueh et al 
(1958) found that negative air ions, but not positive air ions, afforded relief 
from hay fever. Kornblueh (1968) has found that burn victims reported cessation 
of pain and early formation of eschars after exposure to negative air ions. 
These effects were confirmed by others. 
 
Inbar et al (1982) 
have reported that negative air ions improved cardiovascular and 
thermoregulatory system function in men performing a bicycle exercise trial in a 
hot (40oC) environment. Heart rate, body temperature and perceived 
exertion were all reduced. 
 
Serotonin 
hypothesis 
 
Hawkins (1985) reports 
that high concentrations of serotonin have been associated with migraine 
headache attacks. Thus an increase in negative ions would be expected to reduce 
migraine attacks. Reduced serotonin levels result in a mentally relaxed state 
and reduction in feelings of depression. Sulman et al have reported that 
individuals suffering Sharav wind (in Middle East) sensitivity have been 
successfully treated by inhalation of air containing excess negative ions, or by 
administration of serotonin blocking drugs (Kreuger 1976). 
 The situation is confused, however, by other factors. Negative ions appear to reduce serotonin via enhancement of monoamine oxidase activity. Paradoxically, mental illness is often successfully treated using drugs which inhibit this activity and cause a rise in serotonin levels in the brain. 
 
The motor vehicle 
environment 
 
The air ion balance 
and levels which may be experienced by personnel in a motor vehicle are not 
currently reported. This information is essential for assessment of the possible 
air ion responses of occupants of a vehicle. 
 
A second factor which 
may be extremely important is the subject's body voltage. A high body voltage 
could considerably alter the ingestion rates of ions. Ions of like polarity 
would be repelled from the body, and an effective depletion of ingested ions of 
this type can be expected. Similarly, ions of the opposite polarity would be 
attracted, and enhancement of ingestion of opposite polarity ions can be 
expected. Thus it is possible that the same effect as positive ion enhancement 
could be produced by a high negative body potential, even if the ambient air ion 
concentrations are balanced. Control and reduction of body voltage to a near 
zero condition can be expected to reduce any such effects and restore ion 
ingestion to that due to the ambient air ion balance condition. For Muslims body 
voltage to a near zero condition is achieved when they perform the Sajda 
(prostration) in Salat(contact prayer).  
Effects on our 
health  
Besides cleaning the 
air we breathe, negative ions aid in mood elevation and increased oxygen intake 
resulting in the feeling of alertness and vitality-similar to the feeling we get 
when we are in a beautiful forest or near a crashing waterfall or the fresh 
feeling of breathing crisp, clean mountain air. 
Negative ions can 
provide major benefits for asthma, chronic fatigue syndrome, energy, hay fever, 
allergies, sleep & snoring, depression, emphysema, sinus, migraines, colds & 
flu, nausea (all types) chemical sensitivity, fibromyalgia, cigarette smoke & 
other odors, computers & office pollution.  
Scientific Studies  
Research has shown 
that negative ions can:  
(a) Reduce histamine, which triggers hay fever.  
(b) Affect levels of 
serotonin, a neurotransmitter or a neuro hormone associated with anxiety, stress 
and  
Migraine. 
 
(c) Have a beneficial 
effect on anyone suffering from bronchial complaints such as bronchitis asthma, 
catarrh and the common cold.  
(d) Help sufferers of insomnia, migraine, emphysema, eczema, 
headaches, tiredness, and general feelings of malaise.   
( j )A decrease in the 
serotonin level is calming and increases defenses against infection (as proven 
with influenza-  
the flu) 
 
( k) Negative ions 
produce an increase in hemoglobin/oxygen affinity so that the partial oxygen 
pressure in the blood rises but the partial dioxide pressure decreases. This 
results in reduced respiratory rate and enhances the metabolism of water-soluble 
vitamins. In addition, negative ions produce an increase in pH making body 
fluids more alkaline.   
The effect of negative 
ion depletion varies from person to person; the least fortunate can suffer 
migraine, asthma and severe depression.  
Most authorities on 
the subject agree that ions act on our capacity to absorb and utilize oxygen. 
Negative ions in the bloodstream accelerate the delivery of oxygen to our cells 
and tissues, whereas positive ions slow down this delivery of oxygen, producing 
symptoms markedly like those in anoxia (or oxygen starvation).  
The neurotransmitter 
serotonin, linked with mood and stress, is also influenced by ion levels in air. 
Too many positive ions alter the levels, causing stress and discomfort. 
Increasing the negative ion concentration helps bring relief. Researchers 
believe that negative ions may stimulate the reticulo-endothelial system, a 
group of defense cells in our bodies, which marshal our resistance to disease. 
Treatment with negative ions has produced dramatic improvement in the healing of 
severe burns and the reduction of pain.   
Offices and 
organizations that have installed negative air ionization equipment have found 
that their employees are less likely to get colds, report absent less frequently 
and are generally more cheerful and alert. Use of negative air ionizers in the 
closed and artificial atmospheres of submarines and spacecraft.  
Our modern vehicles 
have many problems. Basically they are a plastic-lined metal shell, with air 
supplied through ducting. All these factors dramatically increase positive ions. 
Opening a window can cause problems, letting in polluted city air. Many drivers, 
(long-distance drivers particularly) find using an ionizer in their vehicle 
helps their alertness and concentration - and in some cases, their passenger's 
travel sickness - along with the usual benefits of removing pollen and smoke. In 
the cities, in closed rooms, in cars etc., the proportion of negative ions is 
markedly reduced compared with undisturbed nature. According to the experts, 
positive ions rob us of our good senses and dispositions, while negative ions 
enhance them, stimulating everything from plant growth to the overall well being 
of the human body.  
Summary:
  
The Qur'anic verses 
inspire the readers to new scientific discoveries as quoted in Surah Rad, 13:12. 
In nature there are 
many sources of negative ions, which have many beneficial effects on humans.
 
In general, those 
people with sensitivities to airborne allergens will, understandably, have a 
greater and more immediate response due to the cleansing action of the negative 
ions. Children, in particular, seem to respond quickly. Children breathing 
negatively ionized air were superior in incidental memory and that difficulties 
experienced in dichotic listening were offset.  
Given the right 
conditions, healthy food and pure water, our bodies will usually right 
themselves and develop properly. But so often we neglect the air we breathe. 
Most of us live our day-to-day lives in an environment invisibly polluted, and 
devoid of negative ions.  
By using an ionizer we 
can help purify the air of these microscopic pollutants and restore the ion 
balance that our bodies have evolved to respond to. 
Conclusions 
Reading and deeper 
understanding of the Qur'an leads to many discoveries that will enhance the 
quality of life of all human beings. Muslims who were the intellectual giants 
about 1,000 years ago are marginal in today's world in all facets of human 
endeavors. It is hoped that articles like these will inspire them to do research 
and advance intellectually to reclaim that number one position once again, 
Insha'Allah.  
The consensus of the 
literature reviewed is that environmental air ion concentration levels and 
balance can affect a wide range of biological organisms, including humans. 
Elevated negative air ion levels are widely reported to have beneficial effects 
on humans including enhanced feeling of relaxation, and reduced tiredness, 
stress levels, irritability, depression, and tenseness. 
Depleted ion levels 
and enhanced positive ion levels are reported to have no effect, or deleterious 
effects.  
References 
Aranizer, Negative 
Ions, a web page located at: http://www.aranizer.com/ions.htm 
Buckalew L W, Rizzuto 
A. Subjective Response to negative air ion exposure. Aviation, space, and 
environmental medicine. 53, (8) 822-3, Aug 1982 
Buckalew L W, Rizzuto 
A. Negative air ion effects on human performance and physiological condition. 
Aviation, space, and environmental medicine. 55, Part 8, 731-734, Aug 1984 
Conor Environmental 
Services, Inc., Information on ions, a web page located at: http://www.consultces.com/ions.htm.
 
Fornof K T, Gilbert G 
O. Stress and physiological, behavioral and performance patterns of children 
under varied air ion levels. Int. J. Biometeorol. 32, 260-270, 1988 
Hawkins LH. Biological 
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natural and man made. London, UK, 1985. BLL Conf Ind. 3315.470 No 88 1985. 
Inbar O, Rotstein A, 
Dlin R, Dotan R, Sulman F G. The effect of negative air ions on various 
physiological functions during work in a hot environment. Int. J Biometeor. 26 
(2), 153-163, 1982 
Kreuger A P, Reed E J. 
Biological impact of small air ions. Science, 193, 1209-13. 1976. 
Kellogg E W. Air ions: 
Their possible biological significance and effects. J Bioelectricity 3 (1&2), 
119-136, 1984 
Kornblueh I H, Piersol 
G M, Speicher F P. Relief from pollinosis in negatively ionized rooms. Am. J. 
Phys. Med. 37, 18-27, 1958 
Kornblueh I H. 
Aeroionotherapy of burns. In Bioclimatology, Biometeorology and Aeroionotherapy. 
Gualtierotti et. al. eds., Carlo Erba Foundation, Milan 1968. 
Odatus, Negative Ions, 
a web page located at: http://www.odatus.com/ions.html 
Pentex, What are 
negative ions, a web page located at: http://www.pentax.com/ion_explain.htm. 
"The Ion Effect" by 
Fred Soyka with Alan Edmonds, 1977, E. P. Dutton & Co. 
Sulman F G. The effect 
of air ionization, electric fields, atmospheric and other electric phenomena on 
man and animal. Charles C Thomas, Springfield, Ill. 1980. 
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Yaglou C P, Benjamin L 
K C. Diurnal and seasonal variations in small ion content in outdoor and indoor 
air. Heating, Piping, Air conditioning, 6, 25, 1934   | |||||||||
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