Distilled water is water that has been purified by boiling it into vapor then condensing it back into liquid in a separate container. Impurities in the original water that do not boil below or near the boiling point of water remain in the original container.
Bottled water is drinking water (e.g., well water, distilled water, reverse osmosis water, mineral water, or spring water) packaged in plastic or glass water bottles. Bottled water may be carbonated or not with packaging sizes ranging from small single-serving bottles to large carboys for water coolers. The consumption of bottled water is influenced by factors such as convenience, taste, perceived safety, and concerns over the quality of municipal tap water. Concerns about the environmental impact of bottled water, including the production and disposal of plastic bottles, have led to calls for more sustainable practices in the industry. Some brands have attempted to address the problem of microplastics and chemicals by canning purified water.
Cherenkov radiation (/tʃəˈrɛŋkɒf/) is an electromagnetic radiation emitted when a charged particle (such as an electron) passes through a dielectric medium (such as distilled water) at a speed greater than the phase velocity (speed of propagation of a wavefront in a medium) of light in that medium. A classic example of Cherenkov radiation is the characteristic blue glow of an underwater nuclear reactor. Its cause is similar to the cause of a sonic boom, the sharp sound heard when faster-than-sound movement occurs. The phenomenon is named after Soviet physicist Pavel Cherenkov.
In homeopathy, homeopathic dilution (known by practitioners as "dynamisation" or "potentisation") is a process in which a substance is diluted with alcohol or distilled water and then vigorously shaken in a process called "succussion". Insoluble solids, such as quartz and oyster shell, are diluted by grinding them with lactose (trituration). The founder of homeopathy, Samuel Hahnemann (1755–1843), asserted that the process of succussion activated the "vital energy" of the diluted substance, and that successive dilutions increased the "potency" of the preparation, although other strands of homeopathy (such as Schuessler's) disagreed.
The concept is pseudoscience because, at commonly used dilutions, no molecules of the original material are likely to remain. Therefore high homeopathic dilutions must be distinguished from low dilutions where there can be an overlap with herbal medicine.
Tattoo inks consist of pigments combined with a carrier, used in the process of tattooing to create a tattoo in the skin. These inks are also used for permanent makeup, a form of tattoo.
Professional tattoo inks are available in many colors and use a wide variety of pigments, including inorganic pigments, such as carbon black, and synthetic organic pigments, such as brightly colored azo-chemicals. Commercial manufacturers combine pigments with carriers such as ethyl alcohol or distilled water to create liquid inks. They may include preservatives to reduce risk of contamination and other additives to adjust the viscosity of the ink.