The Earth's magnetic field does help to protect humanity from the effects of the solar wind, and the gusts in the wind that result when a solar flare triggers a Coronal Mass Ejection (CME). Even though the Earth's magnetic field is weak in strength, it fills a vast volume of space, and the charged particles in the solar wind are deflected by the field. However, the magnetic field does not completely protect us from the effects of the sun.

The inner core and outer core of the planet are composed primarily of iron and nickel. The outer core is liquid and the inner core is solid. It is thought that the convective motion of the liquid outer core is responsible for generating the main field. Recent studies indicate that the inner core of the Earth may rotate a bit faster than the outer core and it is possible that this rotation may be associated with field reversals.

All the cells of the body have a weak, natural electric current flowing through them. The currents are caused by electrically charged particles in the cells called ions. Ions affect the metabolism, or the work of the cell. PMFT is a method of applying a magnetic field to the cell which sends a weak electrical signal, influencing the interaction of the ions, and the flow of nutrients in the cell. Enhanced circulation and nutrient exchange can speed the healing process and reduce down time.

Most elementary geology textbooks will report a reversal frequency on the order of every 1/2 to 1 million years. These claims are made by simply averaging out the number of reversals over a given time, but the actual magnetic field reversal of the Earth is highly chaotic. The last field reversal took place about 750,000 years ago and the dipole component of the Earth's magnetic field is getting weaker over the past century or so.

Magnetic fields are historically described in terms of their effect on electric charges. A moving electric charge, such as an electron, will accelerate in the presence of a magnetic field, causing it to change velocity and its direction of travel. This is, for example, the principle used in televisions, computer monitors, and other devices with CRTs (cathode-ray tubes). In a CRT, electrons are emitted from a hot filament.

Fields fill the space between matter and they determine how it is that bits of matter can exert forces on other bits of matter at a distance. There are several different fields in nature, and their reality is demonstrated by our observation of the forces with which they are associated. So, for example, gravitational fields determine how it is that objects with mass are attracted together by a gravitational force.

NightStar can affect a pacemaker's normal mode of operation. If the heart rate of a person with a pacemaker drops below a preset value (typically 85 beats per minute), an internal sensor monitoring the person's heart rate activates the pacemaker. A pacemaker will not send electrical signals to a person's heart unless their heart rate drops below the preset value.

Million Places on Earth is all about attempting to break a World record for the largest book on Earth while at the same time holding a competition to find a million unique places on Earth.

Elementary physics states that the magnetic field of a magnetic dipole is approximately proportional to the inverse square of the distance from the dipole. Therefore, if you double the distance from the magnet, the magnetic field strength will be reduced (roughly) by a factor of 4.

No, unlike magnetic field therapy, with PST the magnetic field only serves as the "carrier" for the electrically pulsed signals. The magnetic field allows these signals to penetrate the injury unchanged. Without the magnetic field, the pulsating signals would be distorted by varying density of the surrounding tissue.

Magnetic field complexity can be realised in a number of forms. For instance, complexity could be a field that is changing in strength (amplitude) either regularly (indicating an amplitude modulated field) or irregularly. The degree and magnitude of the change could also be altering adding another component to the complexity. Another factors might be mixed field frequencies. There may be many different frequency components contained within the measured fields and these may come and go.

Most magnetic fields are man-made. They are found in solenoids, bar magnets and some motors and transformers. Magnetic fields are used in creative ways to create sound, microscopic images and record resonance images through MRI technology. In some cases, however, the fields interfere with sensitive electronic equipment and shielding is necessary.

These questions represent the tip of the iceberg of a large topic about which whole essays have been written and a wide range of different views are held. The WWW was originally devised to present the same content in different presentation situations and for a wide range of readers: on that basis, "looking the same" is not a design criterion, indeed different presentations would be expected to look different.

Yes. We know this from an examination of the geological record. When lavas are deposited on the Earth’s surface, and subsequently freeze, and when sediments are deposited on ocean and lake bottoms, and subsequently solidify, they often preserve a signature of the ambient magnetic field at the time of deposition. This type of magnetization is known as 'paleomagnetism'.

Pulsed magnetic field therapy applies a magnetic field to the cells, which sends a signal that influences the interaction of ions which have a natural electric current flowing through them. These signals initiate biologic reactions which accelerate healing. PMFT is applied with the use of a jacket, which allows the dog to sit, stand, walk, or lie down while receiving therapy.

It is an alternative treatment method which can even be used to treat serious illnesses with sometimes unbelievable therapeutic success - this has been proved in international medical and scientific studies. Well-intentioned explanations refer to it as a biological treatment method. However, that is a generalization. Magnetic Field Therapy is actually one of the oldest treatment methods around, and it is based on physical principles.

Based on our testing, we recommend that the magnetic field strength at the electronic head and controller be no more than 100 gauss field. We provide an MFC option for PEMs that includes an 8 ft (244 cm) head to head cable which allows removing the electronic head and controller from a magnetic field.

Although Hepatitis A, B, and C are all viruses that damage the liver, they are all different and otherwise unrelated. Hepatitis A is spread through ingesting fecal matter (e.g. through changing diapers and not washing hands, performing oral to anal sex, eating contaminated food or drinking contaminated water, etc.). It is an acute infection that can make people extremely sick shortly after contracting the disease. Once people clear the virus, they cannot be reinfected.

It appears that during a reversal of the magnetic field, the dipole component of the field (the dipole is analagous to a bar magnet) slowly decays and grows in the opposite direction. The time that it takes to complete a reversal is also the subject of ongoing debate, but time scales on the order of 10's to a thousand years are commonly cited. There doesn't seem to be any strong correlation between field reversals and extinctions.