5 ms·

Light is light.

ben_w 2y ago
Some wavelengths don't penetrate so deep, and not all bulbs are the same brightness. I've seen obvious lies on some product descriptions on internet listings, therefore I wouldn't trust a specification claim like "x nm" or "y lumen", and unless I had tools to measure them I would not rely on them meeting those specifications.
- PeterStuer 2y ago
  Lumen does not measure much red light.
  - ben_w 2y ago
    Lumens being perceputual brightness means any package listing it for IR is definitely lying; but that only makes it a first-pass filter, "no false positives" does not mean "no false negatives". e.g. even when it's about visible light, well, do you trust this claim of 500,000 lumen?: https://www.amazon.de/Shadowhawk-Rechargeable-Extremely-Waterproof-Emergencies/dp/B099S4CR82/ref=mp_s_a_1_14_sspa?crid=3ME1GUAUAQW3M&dib=eyJ2IjoiMSJ9.rh7FTpSGCyMorJnM69NNjPk3kR6q-fUx7my6W6A07lKkMrJlSbO56gSQC80ueRI-8IVNhj49zKIeHDQECwewKZhEJHBPNtQlVv1E0dsjUWbWmtSUS-yzDqoQ3JBRJeTJzWstZO3Wn9ZQxq26D3O6_Q3Rwcvi7CnmGRF1VpKo6Nk9fgmYCzPpCMqpgYvph1Hwa8kdIftD_ouZ7u1NcMMv4w.O8DOQKOrFgsd3g5-PyDxBRxsxAJAn5co_xEK6_XA4Ys&dib_tag=se&keywords=million+lumen&qid=1739873150&sprefix=million+lumen%2Caps%2C89&sr=8-14-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9zZWFyY2hfbXRm&psc=1 https://www.amazon.de/Shadowhawk-Rechargeable-Extremely-Wate...
    - zimpenfish 2y ago
      > do you trust this claim of 500,000 lumen? Having watched Torque Test Channel test[0] these[1] kinds[2] of claims, no, no I do not. [0] https://www.youtube.com/watch?v=pp8dumORMA0 https://www.youtube.com/watch?v=pp8dumORMA0 [1] https://www.youtube.com/watch?v=EBPQKeeYTfo https://www.youtube.com/watch?v=EBPQKeeYTfo [2] https://www.youtube.com/watch?v=ceA5xL6ggEw https://www.youtube.com/watch?v=ceA5xL6ggEw
- its-summertime 2y ago
  Yeah but like, don't buy from temu or something, buy from digikey etc and just wire it yourself, its cheap enough to be able to fail 20 times without costing more than a burger.

Light is light.

Some wavelengths don't penetrate so deep, and not all bulbs are the same brightness. I've seen obvious lies on some product descriptions on internet listings, therefore I wouldn't trust a specification claim like "x nm" or "y lumen", and unless I had tools to measure them I would not rely on them meeting those specifications.

PeterStuer 2y ago
Lumen does not measure much red light.
- ben_w 2y ago
  Lumens being perceputual brightness means any package listing it for IR is definitely lying; but that only makes it a first-pass filter, "no false positives" does not mean "no false negatives". e.g. even when it's about visible light, well, do you trust this claim of 500,000 lumen?: https://www.amazon.de/Shadowhawk-Rechargeable-Extremely-Waterproof-Emergencies/dp/B099S4CR82/ref=mp_s_a_1_14_sspa?crid=3ME1GUAUAQW3M&dib=eyJ2IjoiMSJ9.rh7FTpSGCyMorJnM69NNjPk3kR6q-fUx7my6W6A07lKkMrJlSbO56gSQC80ueRI-8IVNhj49zKIeHDQECwewKZhEJHBPNtQlVv1E0dsjUWbWmtSUS-yzDqoQ3JBRJeTJzWstZO3Wn9ZQxq26D3O6_Q3Rwcvi7CnmGRF1VpKo6Nk9fgmYCzPpCMqpgYvph1Hwa8kdIftD_ouZ7u1NcMMv4w.O8DOQKOrFgsd3g5-PyDxBRxsxAJAn5co_xEK6_XA4Ys&dib_tag=se&keywords=million+lumen&qid=1739873150&sprefix=million+lumen%2Caps%2C89&sr=8-14-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9zZWFyY2hfbXRm&psc=1 https://www.amazon.de/Shadowhawk-Rechargeable-Extremely-Wate...
  - zimpenfish 2y ago
    > do you trust this claim of 500,000 lumen? Having watched Torque Test Channel test[0] these[1] kinds[2] of claims, no, no I do not. [0] https://www.youtube.com/watch?v=pp8dumORMA0 https://www.youtube.com/watch?v=pp8dumORMA0 [1] https://www.youtube.com/watch?v=EBPQKeeYTfo https://www.youtube.com/watch?v=EBPQKeeYTfo [2] https://www.youtube.com/watch?v=ceA5xL6ggEw https://www.youtube.com/watch?v=ceA5xL6ggEw
its-summertime 2y ago
Yeah but like, don't buy from temu or something, buy from digikey etc and just wire it yourself, its cheap enough to be able to fail 20 times without costing more than a burger.