Dirt

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The great dust heap of London at Battle Bridge in 1836, next to the Smallpox Hospital King's Cross, London; the Great Dust-Heap, next to Battle Br Wellcome V0013642.jpg
The great dust heap of London at Battle Bridge in 1836, next to the Smallpox Hospital
Dirty Dicks is a Bishopsgate pub named after Dirty Dick, who once owned it and was notoriously filthy. Dirty Dick's - geograph.org.uk - 821364.jpg
Dirty Dicks is a Bishopsgate pub named after Dirty Dick, who once owned it and was notoriously filthy.
Dirt-covered sidewalk in Brooklyn, NYC being swept during a community clean-up Sure We Can Earthday clean 2021 1.jpg
Dirt-covered sidewalk in Brooklyn, NYC being swept during a community clean-up

Dirt is any matter considered unclean, especially when in contact with a person's clothes, skin, or possessions. In such cases, they are said to become dirty. Common types of dirt include:

Contents

Etymology

The word dirt first appears in Middle English and was probably borrowed from the Old Norse drit, meaning ' excrement '. [2]

Exhibitions and studies

A season of artworks and exhibits on the theme of dirt was sponsored by the Wellcome Trust in 2011. The centrepiece was an exhibition at the Wellcome Collection showing pictures and histories of notable dirt such as the great dust heaps at Euston and King's Cross in the 19th century and the Fresh Kills landfill which was once the world's largest landfill. [3]

Cleaning

When things are dirty, they are usually cleaned with solutions like hard surface cleaner and other chemical solutions; much domestic activity is for this purpose—washing, sweeping, and so forth. [4]

In a commercial setting, a dirty appearance gives a bad impression. An example of such a place is a restaurant. The dirt in such cases may be classified as temporary, permanent, and deliberate. Temporary dirt is streaks and detritus that may be removed by ordinary daily cleaning. Permanent dirt is ingrained stains or physical damage to an object, which requires major renovation to remove. Deliberate dirt is that which results from design decisions such as decor in dirty orange or grunge styling. [5]

Disposal

As cities developed, arrangements were made for the disposal of trash through the use of waste management services. In the United Kingdom, the Public Health Act 1875 required households to place their refuse into a container that could be moved so that it could be carted away. This was the first legal creation of the dustbin. [6]

Health

Modern society is now thought to be more hygienic. Lack of contact with microorganisms in dirt when growing up is hypothesised to be the cause of the epidemic of allergies such as asthma. [7] The human immune system requires activation and exercise in order to function properly and exposure to dirt may achieve this. [8] For example, the presence of staphylococcus bacteria on the surface of the skin regulates the inflammation which results from injury. [9]

Even when no visible dirt is present, contamination by microorganisms, especially pathogens, can still cause an object or location to be considered dirty. For example, computer keyboards are especially dirty as they contain on average 70 times more microbes than a lavatory seat. [10]

People and animals may eat dirt. This is thought to be caused by mineral deficiency [ citation needed ] and so the condition is commonly seen in pregnant women. [11]

Neurosis

People may become obsessed by dirt and engage in fantasies and compulsive behaviour about it, such as making and consuming mud pies and pastries. [12] The source of such thinking may be genetic, as the emotion of disgust is common and the location for this activity in the brain has been proposed. [13]

See also

Related Research Articles

<span class="mw-page-title-main">Vacuum cleaner</span> Device that sucks up dirt from a surface

A vacuum cleaner, also known simply as a vacuum, is a device that uses suction, and often agitation, in order to remove dirt and other debris from carpets and hard floors.

<span class="mw-page-title-main">Hygiene</span> Practices performed to preserve health

Hygiene is a set of practices performed to preserve health. According to the World Health Organization (WHO), "Hygiene refers to conditions and practices that help to maintain health and prevent the spread of diseases." Personal hygiene refers to maintaining the body's cleanliness. Hygiene activities can be grouped into the following: home and everyday hygiene, personal hygiene, medical hygiene, sleep hygiene, and food hygiene. Home and every day hygiene includes hand washing, respiratory hygiene, food hygiene at home, hygiene in the kitchen, hygiene in the bathroom, laundry hygiene,and medical hygiene at home.And also environmental hygiene in the society to prevent all kinds of bacterias from penetrating into our into our homes.

<span class="mw-page-title-main">Dust</span> Small particles in the air and settling onto surfaces

Dust is made of fine particles of solid matter. On Earth, it generally consists of particles in the atmosphere that come from various sources such as soil lifted by wind, volcanic eruptions, and pollution. Dust in homes is composed of about 20–50% dead skin cells. The rest, and in offices and other built environments, is composed of small amounts of plant pollen, human hairs, animal fur, textile fibers, paper fibers, minerals from outdoor soil, burnt meteorite particles, and many other materials which may be found in the local environment.

<span class="mw-page-title-main">Cleaning</span> Activity that removes dirt and other particles from people, animals and objects

Cleaning is the process of removing unwanted substances, such as dirt, infectious agents, and other impurities, from an object or environment. Cleaning is often performed for aesthetic, hygienic, functional, safety, or environmental protection purposes. Cleaning occurs in many different contexts, and uses many different methods. Several occupations are devoted to cleaning.

<span class="mw-page-title-main">Cleanroom</span> Dust-free room for research or production

A cleanroom or clean room is an engineered space that maintains a very low concentration of airborne particulates. It is well isolated, well controlled from contamination, and actively cleansed. Such rooms are commonly needed for scientific research and in industrial production for all nanoscale processes, such as semiconductor manufacturing. A cleanroom is designed to keep everything from dust to airborne organisms or vaporised particles away from it, and so from whatever material is being handled inside it.

Cleanliness is both the state of being clean and free from germs, dirt, trash, or waste, and the habit of achieving and maintaining that state. Cleanliness is often achieved through cleaning. Culturally, cleanliness is usually a good quality, as indicated by the aphorism: "Cleanliness is next to Godliness", and may be regarded as contributing to other ideals such as health and beauty.

The term cleanser refers to a product that cleans or removes dirt or other substances. A cleanser could be a detergent, and there are many types of cleansers that are produced with a specific objective or focus. For instance, a degreaser or carburetor cleanser used in automotive mechanics for cleaning certain engine and car parts.

Housekeeping is the management and routine support activities of running and maintaining an organized physical institution occupied or used by people, like a house, ship, hospital or factory, such as cleaning, tidying/organizing, cooking, shopping, and bill payment. These tasks may be performed by members of the household, or by persons hired for the purpose. This is a more broad role than a cleaner, who is focused only on the cleaning aspect. The term is also used to refer to the money allocated for such use. By extension, it may also refer to an office or a corporation, as well as the maintenance of computer storage systems.

<span class="mw-page-title-main">Air filter</span> Device composed of fibrous or porous materials which removes solid particulates from the air

A particulate air filter is a device composed of fibrous, or porous materials which removes particulates such as smoke, dust, pollen, mold, viruses and bacteria from the air. Filters containing an adsorbent or catalyst such as charcoal (carbon) may also remove odors and gaseous pollutants such as volatile organic compounds or ozone. Air filters are used in applications where air quality is important, notably in building ventilation systems and in engines.

A fecal coliform is a facultatively anaerobic, rod-shaped, gram-negative, non-sporulating bacterium. Coliform bacteria generally originate in the intestines of warm-blooded animals. Fecal coliforms are capable of growth in the presence of bile salts or similar surface agents, are oxidase negative, and produce acid and gas from lactose within 48 hours at 44 ± 0.5°C. The term thermotolerant coliform is more correct and is gaining acceptance over "fecal coliform".

<span class="mw-page-title-main">Household chemicals</span>

Household chemicals are non-food chemicals that are commonly found and used in and around the average household. They are a type of consumer goods, designed particularly to assist cleaning, house and yard maintenance, cooking, pest control and general hygiene purposes, often stored in the kitchen or garage.

<span class="mw-page-title-main">Ultrasonic cleaning</span> Method of cleaning using ultrasound

Ultrasonic cleaning is a process that uses ultrasound to agitate a fluid, with a cleaning effect. Ultrasonic cleaners come in a variety of sizes, from small desktop units with an internal volume of less than 0.5 litres (0.13 US gal), to large industrial units with volumes approaching 1,000 litres.

<span class="mw-page-title-main">Soil contamination</span> Pollution of land by human-made chemicals or other alteration

Soil contamination, soil pollution, or land pollution as a part of land degradation is caused by the presence of xenobiotic (human-made) chemicals or other alteration in the natural soil environment. It is typically caused by industrial activity, agricultural chemicals or improper disposal of waste. The most common chemicals involved are petroleum hydrocarbons, polynuclear aromatic hydrocarbons, solvents, pesticides, lead, and other heavy metals. Contamination is correlated with the degree of industrialization and intensity of chemical substance. The concern over soil contamination stems primarily from health risks, from direct contact with the contaminated soil, vapour from the contaminants, or from secondary contamination of water supplies within and underlying the soil. Mapping of contaminated soil sites and the resulting clean ups are time-consuming and expensive tasks, and require expertise in geology, hydrology, chemistry, computer modelling, and GIS in Environmental Contamination, as well as an appreciation of the history of industrial chemistry.

<span class="mw-page-title-main">Skin flora</span> Microbiota that reside on the skin

Skin flora, also called skin microbiota, refers to microbiota that reside on the skin, typically human skin.

Personal care products are consumer products which are applied on various external parts of the body such as skin, hair, nails, lips, external genital and anal areas, as well as teeth and mucous membrane of the oral cavity, in order to make them clean, protect them from harmful germs and keep them in good condition. They promote personal hygiene and overall health, well-being and appearance of those body parts. Toiletries form a narrower category of personal care products which are used for basic hygiene and cleanliness as a part of a daily routine. Cosmetic products, in contrast, are used for personal grooming and beautification. Pharmaceutical products are not considered personal care products.

<span class="mw-page-title-main">Vapor steam cleaner</span> Type of cleaning appliance

Vapor steam cleaners or steam vapor systems are cleaning appliances or devices that use steam to dry, clean, and sanitize surfaces. The steam is produced in a boiler that heats tap water to high temperatures to produce low-pressure, low moisture water vapor.

<span class="mw-page-title-main">Cleaning agent</span> Substance used to remove dirt or other contaminants

Cleaning agents or hard-surface cleaners are substances used to remove dirt, including dust, stains, foul odors, and clutter on surfaces. Purposes of cleaning agents include health, beauty, removing offensive odor, and avoiding the spread of dirt and contaminants to oneself and others. Some cleaning agents can kill bacteria and clean at the same time. Others, called degreasers, contain organic solvents to help dissolve oils and fats.

<span class="mw-page-title-main">Pathogenic bacteria</span> Disease-causing bacteria

Pathogenic bacteria are bacteria that can cause disease. This article focuses on the bacteria that are pathogenic to humans. Most species of bacteria are harmless and are often beneficial but others can cause infectious diseases. The number of these pathogenic species in humans is estimated to be fewer than a hundred. By contrast, several thousand species are part of the gut flora present in the digestive tract.

<span class="mw-page-title-main">Contamination control</span> Activities aiming to reduce contamination

Contamination control is the generic term for all activities aiming to control the existence, growth and proliferation of contamination in certain areas. Contamination control may refer to the atmosphere as well as to surfaces, to particulate matter as well as to microbes and to contamination prevention as well as to decontamination.

Interplanetary contamination refers to biological contamination of a planetary body by a space probe or spacecraft, either deliberate or unintentional.

References

  1. Arno Cahn, ed. (2003). 5th World Conference on Detergents. p. 154. ISBN   9781893997400 via Google Books.
  2. "dirt, n." . Oxford English Dictionary (Online ed.). Oxford University Press. doi:10.1093/OED/1353882326.(Subscription or participating institution membership required.)
  3. Brian Dillon (23 March 2011), "Dirt: the Filthy Reality of Everyday Life, Welcome Collection", The Daily Telegraph , archived from the original on 24 March 2011
  4. Mindy Lewis (2009), Dirt: The Quirks, Habits, and Passions of Keeping House, ISBN   9781580052610
  5. John B. Hutchings (2003), Expectations and the Food Industry, ISBN   9780306477096
  6. V.K. Prabhakar (2000), Encyclopaedia of Environmental Pollution and Awareness in the 21st Century, p. 10, ISBN   9788126106516
  7. Dirt can be good for children, say scientists, BBC, 23 November 2009
  8. Mary Ruebush (2009), Why Dirt Is Good: 5 Ways to Make Germs Your Friends, ISBN   9781427798046
  9. Lai, Y; Di Nardo, A; Nakatsuji, T; Leichtle, A; Yang, Y; Cogen, AL; Wu, ZR; Hooper, LV; Schmidt, RR (22 November 2009), "Commensal bacteria regulate Toll-like receptor 3–dependent inflammation after skin injury", Nature Medicine, 15 (12): 1377–82, doi:10.1038/nm.2062, PMC   2880863 , PMID   19966777
  10. The joy of dirt, The Economist, 17 December 2009
  11. López, LB; Ortega Soler, CR; de Portela, ML (March 2004). "Pica during pregnancy: a frequently underestimated problem". Archivos Latinoamericanos de Nutricion. 54 (1): 17–24. PMID   15332352.
  12. Lawrence S. Kubie, "The Fantasy of Dirt", The Psychoanalytical Quarterly, 6: 388–425
  13. Valerie Curtis, Adam Biran (2001), "Dirt, Disgust, and Disease: Is Hygiene in Our Genes?", Perspectives in Biology and Medicine, 44 (1): 17–31, CiteSeerX   10.1.1.324.760 , doi:10.1353/pbm.2001.0001, PMID   11253302, S2CID   15675303

Further reading