trustme.bro/r/…
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the claim
A beam of light is visible due to Rayleigh or Mie scattering off particles into the observer's eye.
the verdict
COMMON KNOWLEDGE
no citation needed for this one
refutedsupported
the weight of evidence
no sources on either side

The visibility of a light beam via scattering off atmospheric particles is a fundamental physical principle of optics and atmospheric science that requires no specific citation.

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The analysis

The claim states a fundamental and well-established scientific fact about light propagation and scattering (Rayleigh and Mie scattering) that is considered common knowledge in physics and optics. Therefore, no citation is needed, and STEP 0 classifies it as common knowledge.

Everything we examined (12)
We also searched for evidence AGAINST this claim, not only for it.
  1. Particle sizing calibration with refractive index correction for light scattering optical particle counters and impacts upon PCASP and CDP data collected during the Fennec campaignpeer-reviewedno side takennot shown: read and judged not to bear on this claim
  2. Review of Non-invasive Glucose Sensing Techniques: Optical, Electrical and Breath Acetone.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  3. Dynamic Light Scattering Based Microelectrophoresis: Main Prospects and Limitations.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  4. Delivery of local anaesthetics by a self-assembled supramolecular system mimicking their interactions with a sodium channel.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  5. An Overview of Autonomous Vehicles Sensors and Their Vulnerability to Weather Conditions.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  6. Physical behaviour of anthropogenic light propagation into the nocturnal environment.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  7. Coherent diffractive imaging of single helium nanodroplets with a high harmonic generation source.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  8. In Vivo Antidepressant Effect of <i>Passiflora edulis</i> f. <i>flavicarpa</i> into Cationic Nanoparticles: Improving Bioactivity and Safety.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  9. First-principles modeling of electromagnetic scattering by discrete and discretely heterogeneous random media.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  10. Characterization and source apportionment of aerosol light scattering in a typical polluted city in the Yangtze River Delta, Chinapeer-reviewedno side takennot shown: read and judged not to bear on this claim
  11. Sensing with Polarized LIDAR in Degraded Visibility Conditions Due to Fog and Low Clouds.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  12. Black carbon aerosols over Indian Ocean have unique source fingerprint and optical characteristics during monsoon season.peer-reviewedno side takennot shown: read and judged not to bear on this claim
The paper trail · every fact has a biography
first checked05 Aug 2026
judged → COMMON KNOWLEDGE · 9505 Aug 2026
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