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A video of a black man unsuccessfully trying to get soap from an automatic dispenser has gone viral amid claims that the tech devices struggle with racial diversity. Chukwuemeka Afigbo, based in Lagos, Nigeria shared the footage on his social media accounts. The video opens with a white man getting soap from the dispenser. A dark skinned man then tries, with no luck. The men can be heard saying “too black” as they continue to struggle with the device.
Eventually, a white paper towel is passed under the device, which immediately triggers the sanitizer.
Infrared radiation exists in the electromagnetic spectrum at a wavelength that is longer than visible light. It cannot be seen but it can be detected. Objects that generate heat also generate infrared radiation and those objects include animals and the human body whose radiation is strongest at a wavelength of 9.4um. Infrared in this range will not pass through many types of material that pass visible light such as ordinary window glass and plastic. However it will pass through, with some attenuation, material that is opaque to visible light such as germanium and silicon. An unprocessed silicon wafer makes a good IR window in a weatherproof enclosure for outdoor use. It also provides additional filtering for light in the visible range. 9.4um infrared will also pass through polyethylene which is usually used to make Fresnel lenses to focus the infarared onto sensor elements...
originally posted by: TinfoilTP
So if someone has hands that are dark, from say dirt, the dispenser won't work?
That is a design flaw, the free market will fix that by facilities buying dispensers that work and throwing them poorly designed ones in the landfill and giving the product bad reviews so others don't buy a broken product. This will cause the manufacturer to either fix the product or go out of business.
originally posted by: skunkape23
He could have smiled and passed his teeth in front of the sensor.
I have a good friend that is as black as an egg plant.
He's never told me of having any such problem.
I am so not racist that I feel comfortable making racist jokes.
originally posted by: whyamIhere
originally posted by: skunkape23
He could have smiled and passed his teeth in front of the sensor.
I have a good friend that is as black as an egg plant.
He's never told me of having any such problem.
Now that sounds racist.
I now have to feel guilty for laughing.
originally posted by: skunkape23
I am so not racist that I feel comfortable making racist jokes.
originally posted by: whyamIhere
originally posted by: skunkape23
He could have smiled and passed his teeth in front of the sensor.
I have a good friend that is as black as an egg plant.
He's never told me of having any such problem.
Now that sounds racist.
I now have to feel guilty for laughing.
These sensors are much like the motion detectors that open the doors to the grocery store or cause the sinks and toilets in the airport to activate without touch. We see motion-sensing devices everywhere. But how do they work?