Radiation sourceRadiation Protection PlanNatural radiationRadiation doseBackground radiation sourcesSource of background radiationRadiation Regulations - SingaporeBackground radiation levelWhat is background radiation? Is background ...
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Background radiation varies from place to place and over time, depending on the amount of naturally-occurring radioactive elements in soil, ... Skiptomaincontent Officialwebsitesuse.gov A.govwebsitebelongstoanofficialgovernmentorganizationintheUnitedStates. Secure.govwebsitesuseHTTPS Alock(LockAlockedpadlock)orhttps://meansyou’vesafelyconnectedtothe.govwebsite.Sharesensitiveinformationonlyonofficial,securewebsites. RadiationProtection ContactUs Whatisbackgroundradiation?Isbackgroundradiationarisktomeandmyfamily? Naturalbackgroundradiationisallaroundus.Backgroundradiationvariesfromplacetoplaceandovertime,dependingontheamountofnaturally-occurringradioactiveelementsinsoil,waterandair.Weatherconditionsalsoaffectradiationlevels,assnowcovermayshieldtheseelements,andradioactiveparticulatescanwashoutoftheairduringrainstorms.Cosmicradiationfromthesun,ourgalaxy,andbeyondisconstantlyaroundusandcontributestonaturalbackgroundradiation.Altitudeandlatitudecanalsoinfluencethelevelofbackgroundradiationatanyonesite. Allrocksandsoilscontainsometraceamountofnaturalradioactivityandcansometimesbeingestedorinhaledifdisturbed.Radonisagasthatcanconcentrateindoorsandbeinhaled,alongwithitsdecayproducts.Wecanalsoingestradioactivityfromthefoodweeatandthewaterwedrink. Anumberoffactorsdeterminetheannualdoseyouandyourfamilyreceivefrombackgroundradiation.Thefollowingchartshowsthepercentageofbackgroundradiationdosereceivedannuallyfromvariousnaturalsources. Source:NationalCouncilofRadiationProtectionandMeasurements(NCRP),Report160 Toestimateyourpersonalyearlyradiationdosefromthemostsignificantsourcesofionizingradiation,pleasevisitCalculateyourRadiationDose. Formoreinformationonbackgroundradiation,visitRadiationSourcesandDoses. Formoreinformationonradonandhowitmayaffectyouandyourfamily,visittheEPA'sRadonwebarea. ReturntoFrequentQuestionsaboutRadiationProtection. RelatedQuestions Whatisradongas?Isitdangerous?WherecanIfindmoreinformationaboutradoninmyhome?Wheredoesradongascomefrom? ContactUstoaskaquestion,providefeedback,orreportaproblem. LastupdatedonOctober6,2021
延伸文章資訊
- 1Background radiation - Wikipedia
Background radiation is a measure of the level of ionizing radiation present in the environment a...
- 2Natural Background Radiation Dose Assessment in Taiwan
The natural background radiation dose level in Taiwan was assessed by using the measured data and...
- 3Natural background radiation - Canadian Nuclear Safety ...
Natural forms of radiation are found in cosmic rays, radioactive soil and rocks, radon. Backgroun...
- 4What is Background Radiation? - World Nuclear Association
Naturally-occurring background radiation is the main source of exposure for most people. Levels t...
- 5Radiation Sources and Doses | US EPA
Background radiation
