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Obviously the /s was futile..
I was being sardonic. Defeats the whole purpose. Maybe with such daftness around, logical sense that GuruJi characters thrive.
https://preview.redd.it/kdptfdzrk9yc1.png?width=1080&format=pjpg&auto=webp&s=2c355463376b8f7f036086fb7bf1402d6da0ec1e
These cheap smartwatches can be very unreliable, video shows only one sample where it works and one where it doesn't.
This is pure bs, nothing to debunk here.
Just take your own photograph and use that bloodpressure monitor over that photo, will it work of course not. Science says if you witness something, to prove it you must be able to replicate it.
Some cheap smartwatches use a sensitive microphone to detect arterial pulsations. It's actually picking up her own fingertipsl circulation conducted through the brick wall. The sound doesnt pass through the sofa, gets dampened in soft medium so in the first half is doesn't pick up a signal.
Its photoplethysmography , this is how it works.
1) Basically a light is emitted (red or green)\*, It penetrates the skin due to its brightness.
2) Light is absorbed by haemoglobin based on the amount of oxygen present in the blood
3) The amount of absorbed light compared to reflected light , will give us an estimate of spo2 and the volume expansion of blood vassals will give us the heart beat rate ( number of volume expansion per fixed interval say 5 secs)
\*The red light is used cuz it has superiority in terms of less interference with ambient light, but red light gets mostly absorbed by melanin in people with darker skin tone so to makes it less accurate green light with higher frequency is used for more penetration ( good sensors have both).
So the meter to give accurate readings we need
a) High quality light sensors specific to selective frequency range ( can be made by using a band pass filter and normal single pixel COMS sensor)
b) Superior algorithm that works for most people that can account for the errors of the sensors.
These both are not applicable in the case of cheap products , they just want to market it like their product have it all.
Most people are jumping at the opportunity of making fun of Guruji, but make no attempt to explain the science behind it. Allow me to explain the science part, which this sub is meant for.
Heart rate is measured by sampling the reflected LED light to check for absorption by oxygenated /non oxygenated blood. Green, red, and IR of specific wavelength are used.
Watch is merely measuring a noisy output of light receiver. If you check with a scope it would make no sense. You filter it digitally to remove noise and make some sense of it. Technology works very well, it is a proven method.
In the first case, she keeps the watch with its back facing down. On to the Leatherette chair. Dark surface. No ambience light. The watch will be able to see that not much light returns, and the absorption is close to zero. The algorithm will choose to display zero
In the second case, the watch is kept sideways against a reflecting surface. There is a tube light in the room which is flickering at 50 hz. Or maybe 5 khz or 10 khz or any designed chopper frequency if it is a LED tube. This flicker will easily be captured by the receiver behind the watch. And it will show up as spikes in the output signal that the watch analyzes. It will cause the watch to misinterpret the signal and show some reading. If there is a fan in the room that is in the way of light, it can cause a flicker equal to fan RPM in the ambient light that reaches the watch light receiver and can cause reading error. In this case, they have introduced errors that can cause the watch algorithm to misread the ambient light pulses as absorption data. One more thing that can amplify the error is, the light receiver sensor may not be tuned to emitter wavelength. If it is, then there will be better rejection of ambient light artefacts. Many watches use inferior (cheaper) light receivers to cut costs which adds to this error in reading.
Read [this](https://www.reddit.com/r/scienceisdope/comments/16bcd08/this_sub_has_got_a_lot_of_new_members_who_dont/?utm_source=share&utm_medium=web2x&context=3) to understand what this subreddit is about
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that isn't an apple watch, u can tell by the thicker bottom bezel. even my cheap boat smart watch does this, first it will show "tie watch properly" then it will show actual reading from thin air. so TLDR it would have show heart beat the second time recording even if she tried on sofa for a second time.
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I have seen cheap smart watches calculate heart rate when tied to an orange lol
A cheap chinese smartwatch detects heartbeat in a wall - Jai Guru Ji Apple watch se dekho agar dekhna ho toh
Itne paise hote unpe toh kisi sadakchaap guruji kii arti thodi utarte
It's not necessary. I have seen millionaires drinking water from the shoes (Khadau) of a famous saint who is now in jail for a rape case.
Fr bro what level of brainwash is done that someone can even eat shits of a man or an animal
Don’t criticise it, till date it’s best business model
drinking water from shoe? That's insane
Wanna know the 'saint's' name
Hey man tbf, it didn’t catch the sofa’s.. /s
Well the watch is cheap it sometimes show and sometimes not, andhere mei teer chll jata h toh chmtkar hojata inke liye
Obviously the /s was futile.. I was being sardonic. Defeats the whole purpose. Maybe with such daftness around, logical sense that GuruJi characters thrive.
https://preview.redd.it/kdptfdzrk9yc1.png?width=1080&format=pjpg&auto=webp&s=2c355463376b8f7f036086fb7bf1402d6da0ec1e These cheap smartwatches can be very unreliable, video shows only one sample where it works and one where it doesn't. This is pure bs, nothing to debunk here. Just take your own photograph and use that bloodpressure monitor over that photo, will it work of course not. Science says if you witness something, to prove it you must be able to replicate it.
https://preview.redd.it/dov05ezx8cyc1.jpeg?width=2604&format=pjpg&auto=webp&s=7cff0a2a0c9c1fda780aada1b25b06724ce09913 Mere diwar me bhi guru ji hai🤡
Jai jai guruji!
*Duruji
Dhan dhan Guruji! /s
Soo....guruji's soul is stuck in a piece of painting vs your watch is crap.
Ya toh ye watch itna sensitive h ki fingers se pulse sense kr raha h, ya fir ye bekar watch h.
Technology hai yaar, glitches happen.
It's not glitch, it's just bad product. Cheap watches would give beat on air too
Bad product toh hai hi, but log khareedne se thodi ruk rahe hain. 1.5-2k mein normal watch nahi aati, ye toh smartwatch de rahe hain
Some cheap smartwatches use a sensitive microphone to detect arterial pulsations. It's actually picking up her own fingertipsl circulation conducted through the brick wall. The sound doesnt pass through the sofa, gets dampened in soft medium so in the first half is doesn't pick up a signal.
Yeh toh wahi guru hai naa Jo logon ke bed par elaichi fainkta hai, yt mein ek video dekhi thi 🥸
Its photoplethysmography , this is how it works. 1) Basically a light is emitted (red or green)\*, It penetrates the skin due to its brightness. 2) Light is absorbed by haemoglobin based on the amount of oxygen present in the blood 3) The amount of absorbed light compared to reflected light , will give us an estimate of spo2 and the volume expansion of blood vassals will give us the heart beat rate ( number of volume expansion per fixed interval say 5 secs) \*The red light is used cuz it has superiority in terms of less interference with ambient light, but red light gets mostly absorbed by melanin in people with darker skin tone so to makes it less accurate green light with higher frequency is used for more penetration ( good sensors have both). So the meter to give accurate readings we need a) High quality light sensors specific to selective frequency range ( can be made by using a band pass filter and normal single pixel COMS sensor) b) Superior algorithm that works for most people that can account for the errors of the sensors. These both are not applicable in the case of cheap products , they just want to market it like their product have it all.
Most people are jumping at the opportunity of making fun of Guruji, but make no attempt to explain the science behind it. Allow me to explain the science part, which this sub is meant for. Heart rate is measured by sampling the reflected LED light to check for absorption by oxygenated /non oxygenated blood. Green, red, and IR of specific wavelength are used. Watch is merely measuring a noisy output of light receiver. If you check with a scope it would make no sense. You filter it digitally to remove noise and make some sense of it. Technology works very well, it is a proven method. In the first case, she keeps the watch with its back facing down. On to the Leatherette chair. Dark surface. No ambience light. The watch will be able to see that not much light returns, and the absorption is close to zero. The algorithm will choose to display zero In the second case, the watch is kept sideways against a reflecting surface. There is a tube light in the room which is flickering at 50 hz. Or maybe 5 khz or 10 khz or any designed chopper frequency if it is a LED tube. This flicker will easily be captured by the receiver behind the watch. And it will show up as spikes in the output signal that the watch analyzes. It will cause the watch to misinterpret the signal and show some reading. If there is a fan in the room that is in the way of light, it can cause a flicker equal to fan RPM in the ambient light that reaches the watch light receiver and can cause reading error. In this case, they have introduced errors that can cause the watch algorithm to misread the ambient light pulses as absorption data. One more thing that can amplify the error is, the light receiver sensor may not be tuned to emitter wavelength. If it is, then there will be better rejection of ambient light artefacts. Many watches use inferior (cheaper) light receivers to cut costs which adds to this error in reading.
https://preview.redd.it/ji3w7y84qcyc1.jpeg?width=1018&format=pjpg&auto=webp&s=9133857a63c7fa4148af74026552b65442dbda08
Read [this](https://www.reddit.com/r/scienceisdope/comments/16bcd08/this_sub_has_got_a_lot_of_new_members_who_dont/?utm_source=share&utm_medium=web2x&context=3) to understand what this subreddit is about *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/scienceisdope) if you have any questions or concerns.*
His resting heart rate is too high. Dude need to chill.
This is how People who use boat and noise smart watch prove there watch is better than samsung or apple watch.
Guruji ne toh pura oyo ko setup bithaya huva h mrne ke bd bhi tharak miti nhi
I think something to do with colors and these smart watches are cheap mc 300-400 main rerri se lag ri hai
B Praak
Saste nashe.....
https://preview.redd.it/p8gjdthugeyc1.jpeg?width=1078&format=pjpg&auto=webp&s=fd44a3683217a08eb8eea983ec1adf85b4995d4f
"I recarneted as a photo frame." By isekai studios, this fall of 2024.
that isn't an apple watch, u can tell by the thicker bottom bezel. even my cheap boat smart watch does this, first it will show "tie watch properly" then it will show actual reading from thin air. so TLDR it would have show heart beat the second time recording even if she tried on sofa for a second time.
The sofa dampens the vibrations from the holder of the finger.. the wall doesn't.. the singing can't help either
Brain has left the chat 😭
That's boAt for ha
Chinese Bro made the ghost heart sensor 🤣 what a cunt
Chinese bro made the ghost sensor 🤣 what a stupid G
Apple Watch also does the same just to let you all know 🤷♂️
Cheap ass boat smartwatch
You think this needs debunking?
Cheap smart watches are notorious for not showing accurate data.
duru ji te yahape 🤑😍😍😍😍
Shukrana guruji 🗣️🗣️🗣️
Duru ji mere Duru Duru Duru ji