2.0 – Science behind Rajnikanth ‘s Movie | Mobile Phone Radiation Explained by Dhruv Rathee

Namaskar friends! Robot 2.0 ! Few days ago, I watched the infamous Rajnikanth's and Akshay Kumar's science fiction movie in the theaters. and if you too have watched the movie, you may be wondering the same thing I was, after the movie ended. Is it true what the movie showed? How much truth is there in this movie? I'm not talking about the action scenes in the movie. Nor am I talking about the technology used to make Chitti robot. It is obviously a science fiction movie so all that is fiction.

I'm talking about the so called social message in the movie! It is shown in the movie that the radiation emitted from the cell phone towers, has an adverse effect on people as well as on birds. The movie went so far as to say that, the decline in the birds' population in India in the last many years, is because of the radiation emitted from the cell phone towers. How much truth is there in this? In today's educational video friends, I'll like to tell you about this! Come let's see! In the movie, it is repetitively said that there's radiation coming from the cell phone towers. So what is this radiation actually? It is radio frequency (RF) waves When your phone uses 3G, 4G, or makes calls, It communicates with the cell phone towers through RF waves. Radio frequency waves is a type of electromagnetic waves. To understand this, we have to refer back to our class 12's physics book. If you remember, chapter 8 was electromagnetic waves. Electromagnetic waves are produced by the vibrations of electric field and magnetic field.

This is a type of energy propagation. It takes energy from one place to another. It is seen occurring naturally as well as artificially in many places. The best example of electromagnetic waves is light. Light is an EM wave! If you remember the EM spectrum, it is a way to classify various EM waves based on their frequency and wavelength The waves that have the longest wavelength are radio waves, ranging from a few meters to a few kilometers. Then are the microwaves with wavelength of a few centimeters. Your microwave has microwaves in it. Microwave has Microwaves! If concentrated at a place, they produce heat. Then are the infrared waves which are used in remote controlled TVs. Then is the visible light which you can see all around you. Their wavelength ranges from 350-700 nanometer. Different colours have different wavelengths. Then comes the UV rays. The frequency starts to increase from here. X-rays and gamma rays follow UV rays.

The EM waves after the visible light are troublesome. Because their frequency is so high, and their wavelength is so small, they can break chemical bonds inside a molecule. Which is why they are called ionizing radiation. Ionizing radiation is very harmful for humans and animals alike as they can penetrate into our DNA and break their chemical bonds. Causing mutations in the cells and can eventually lead to cancer. As the frequency of the EM waves increases, they become more dangerous. The radio activity emitted from nuclear material, is the most dangerous. Because the frequency of that radiation and it's power is very high. So now the question arises, whether the EM waves before the visible light, known as non-ionizing radiation, Is this non-ionization radiation harmful for humans and animals? No scientific conclusion has been reached on it yet. Some research state the effects of being exposed to non-ionizing radiation at high levels for a long amount of time. Other researches state that there are no harmful effect on humans and animals. But scientists and experts agree that non-ionization radiation definitely cannot cause mutation or cancer, using the same mechanisms as ionizing radiations.

But is there any other mechanism by which non-ionizing radiations can be harmful for us? It is being researched. The scientists claim that the heat produced by the non-ionizing radiation, like in our microwave, where the heat cooks the food this heat, if concentrated in high powers on human tissues, can cause burns Basically, it has the potential to cause burns if you're exposed to the heat produced by any non-ionizing radiations for prolonged periods Which is why various Government agencies have set radiation limits for cell phones and cell phone towers They do not want the heating effects from non-ionizing radiation to get so much that people suffer burns. FCC, an US agency, has set a radiation limit of 1.6 watts per kilogram Cell phones should not exceed this limit This limit is way less than the radiation which would result in actual heat production. So, you see it is quite safe. The chances of any long term harmful effects, because of using cell phones is very low.

The simple reason for this is, if you take the population of the world as a sample size, you would see the rise in the cell phone usage in the last 20-30 years. Number of people using cell phones has risen exponentially! But there are no diseases which have seen exponential increase in those years. You can see this chart of worldwide cancer cases between 1990-2016. There is no type of cancer cases which saw an immense increase.

Same can be said for any other disease. If using cell phones had resulted in harmful effects, we would have seen it in some disease or other. The best example for this is smoking rates and cases of lung cancer. Here you can see the chart of UK, showing the fall in smoking rates in the last 50 years. And you can also see that the lung cancer cases have fallen at the same rate This tells us that smoking and lung cancer have a direct relation. You can see this relation all over the world. The countries with high rates of smoking, have high rates of lung cancer too.

In china, more than 50% of male population smoke, so the lung cancer rate is very high there. You can see the same relation in Ultraviolet radiation and skin cancer. Australia has the highest rates of skin cancer cases. Because the population there is not well adapted to live in that country. The majority of people living there are of British origins, and are exposed to the large amount of UV rays from sun. Their skin colour has not adapted to live there. The ozone hole is also quite close to Australia, because of which it has even more exposure to UV radiation. It results in Australia having most number skin cancer cases. Overall, what I mean to say is, you do not have to worry.

The chances of radiation from cell phones harming you, are very slim. However if you still want to minimize this radiation, then do not put your cell phone to your ears while talking. Because the closer it is to your body, the more radiation you will be exposed to. Even a little distance would minimize the radiation. I am not promoting cell phone usage. The addiction to smartphones, the mental issues associated with it, you may face those. You should definitely use cell phones only when needed. Nowadays people are addicted to their smartphones, so I would recommend not to over use your cell phones.

About the decline in the bird population for the last 20-30 years, what's the reason for it? Ornithologists agree that there are no conclusive scientific evidence stating that cell phone towers are the reason behind the decline. Which means there are larger forces at play here causing this decline in bird population. The biggest among them is agriculture! Experts believe growth in agriculture, has led to an increase in use of pesticides, which in turn has led to decline in insect population. Since insects are the food for birds, birds cannot feed properly, hence their population is also declining. Agriculture is said to be one of the major reasons. Not only in India, but all over the world, the bird population has started declining. In this graph, you can see the reasons behind this world wide decline of bird population.

'y' axis represents the factors affecting the different species of birds Agriculture, invasive species are the main factors. The other obvious reasons are urbanization, deforestation, climate change, pollution is another important factor here. Which, I feel, specifically in our country is very valid. You can see that nowhere among these threats, cell phone towers are specifically mentioned. So what's shown in the movie is immensely misleading. The movie shows that the main reason behind the decline in the bird population is the cell phone towers. Which is not the case at all.

I felt that the movie had a lot of potential but it missed it's opportunity. Wildlife conservation and bird conservation are very important environmental issues. Not only for our country, but also for the whole world. To put the blame on things like cell phone towers, without any scientific evidence and missing the major points, misleads the audience. The important social message that could have been given out, is wholly missed it isquite unfortunate because they could have dealt with an actual cause like the excessice use of pesticides Instead of blaming cell phone towers in the movie, had they put the blame on pesticides, it would've been scientifically correct, and the audience could have gotten the real message, loud and clear. Not to use excessive pesticides and to promote organic farming. This could have had an actual impact on the falling bird populations. In June 2018 more than 200 scientists from around the world wrote an petition that a specific family of pesticides called neonicotinoids should be banned, because this family of pesticide is adversely affecting the bio diversity and bird population. Now this has been scientifically proven as well. Many researches have shown direct evidence for it.

Such misleading information can have significant dangerous impact on people. Recently in Germany, cases of measles have started cropping up. It is a disease which was completely eradicated from the western European countries. But now the cases are cropping up once more. What is the reason behind this? Rumor mongering and Fear mongering! Rumors had been spread that vaccination is causing mental problems. Even though there is no scientific evidence backing it. It was a lie that spread among the masses. When they stopped vaccinating their kids, the disease which could have been prevented, resurfaced again. Which is why you can see that measles made a comeback.

This type of fear mongering can scam you too. If you search on Google for the impact of cell phone towers your health, or how it increases the risk of cancer, One of the link that comes up on the top searches is of this website. This website tells you how dangerous the radiation from cell phones and microwaves are. If you read the article till the end, they tell you to click at a link if you want to be protected from radiation. When you click on it, you'll see they're selling a pendant to protect one from the radiation.

It is priced at 108$ !! These people are making a fool out of people by playing at their fears. Can they ever be justified? As far as the movie is concerned, I do not feel that the movie is watchable. It is too boring and has no quality content. You do not have to watch it if you were considering to. But this is my opinion, maybe you'll like it. Finally I'll like to say friends, promote scientific thinking, share this video.

And if you like my work, then contribute to me on patreon.com/dhruvrathee by becoming a member on patreon, so that I keep making such educational videos. We shall meet in the next video friends. Thank You!.

As found on YouTube

Can using your cell phone give you brain cancer?

Are cell phones risky? Cell phones are everywhere. There are over
six billion cell phone subscriptions worldwide – nearly one for every man,
woman, and child on the planet. And many people claim they can no longer
live without them. But are they safe? Is it possible that something so near
and dear to us could be risky? And if so, what kind of risk would it
be? For starters, Most cell phones these days use lithium-
ion batteries, which, as a previous Risk Bites explored, can present a fire risk if
you abuse them. But so long as you don't treat your
phone like a racketball, you're probably okay. Then there's the non-ionizing radiation. Like other wireless electronic
appliances, cell phones use high-frequency radio
waves to do their thing. These radio waves allow the phone to
communicate with satellites, computers, and other phones, which in turn allow us
to communicate with each other.

What makes cell phones different from
other wireless appliances is that we have a habit of holding them next to
our heads. So it's perhaps not surprising that researchers have asked if there is any
risk associated with extended exposure to cell phone radiation. To put it bluntly, they want to know:
can cell phones give you brain cancer? Researchers in the United States, Sweden,
Denmark, Switzerland, the UK, and other countries have been looking into the
question since cell phones first hit the market in the nineteen eighties. For years, they have tracked cases of phone
usage and brain cancer across time and geography. After decades of research and massive
studies using hundreds of thousands of people from multiple countries, the
answer is a resounding: probably not. In two thousand and eleven, the World Health Organization pulled
together a group of experts from around the world to review the available data on
cell phone radio waves and cancer. Their conclusion? The vast majority of evidence shows no
increase risk associated with cell phone use.

However, a slender few reports did find a
slight association between cell phone use and cancer. So, the WHO, being a cautious body,
declared cell phone radio wave emissions to be possible human carcinogen. What does this mean? Simply that the isn't enough evidence to
be sure either way – we can't say that cell phones are unsafe. But we can't say that cell phones are one
hundred-percent entirely safe yet either. That may sound scary, but before you cancel
your phone subscription, consider that this category of possible carcinogens
also includes coffee and pickled vegetables. Surprisingly, the best studied risk associated with
cell phones comes not from the phone itself, but from the distraction it
causes to drivers We'll dive into that another time.

But until then, don't forget to subscribe and stay safe. And whatever you do, don't watch Risk
Bites while driving!.

As found on YouTube


I saw this video on Twitter, with more than 5 million views on Twitter and a million views on YouTube Just this guy modified his phone with fans to take pictures This is cool, but my only problem is that it is not only fake, but a hoax, and I will explain it But for being fake The first clue is that these are 3 volt fans that can be seen tied to a rope here And you can see that they can handle around 30g And the phone with the number of flight can reach 300 grams And since the drones are designed to remain in the air, they need at least 70% of thrust, and they need at least 15 Mattor who has this one, but that wouldn't look great In fact, we experienced the same thing he did It was used in the video and it turned the motor to the highest degree and this is what happened Here in slow motion, you can see that there is hardly any difference if you don't start the motors So I'm going to show you how this object made this video and broke the laws of physics 4 times in a 3 minute video So obedience to the laws of physics is not optional We will be calling our fellow YouTuber Captain Dilling to see if he can help us identify any indicators of special effects.

And then With my friend Peter Serbol he will show you what it will take Actually building a phone that takes a selfie flying and then I'm going to put all the details on a new set. I built it using the Wix website But before I do any of that Let me first explain why this is a scam and not just a harmless fake video of stale internet points. With this many scenes A staggering 80% like rate, which means most people probably didn't even realize it was a fake It is a statistical certainty that some young people aspire to become engineers They actually tried to build this on their own And worse, dropping their family's phones and breaking them This was probably his first experience making something. But, how would you ask Do they know what ingredients to use well? Here in the description an amazing maker who was kind enough to put amazon affiliate links You can find this out from the URLs. So he is making money from the shattered dreams of aspiring engineers without enough experience yet.

This is what he sees And aspiring engineers are my people, and don't mess with my people. Let's do it The second, unexplained violation of physics comes in this scene, the force of gravity always points down, but the heliotropic feathers create a force vertically For the blades themselves So if you want to hover, you have to be on the level so that the forces are canceled and they won't move if you tilt forward Then he broke the thrust into its x and y components Suddenly you have an unbalanced force that will move you in this direction This is how helicopters move forward by flipping forward It's physically impossible to fly in a direction like this The front-wheel drive component is unbalanced and will have to move the phone forward The third major issue is the Arduino circuit board that I choose It's the same board here and it's supposed to be the brains of a drone However, this particular model of the board doesn't come with any kind of gyroscope or accelerometer.

This is why this matters if you've ever tried it Balancing something on your hand like this you and your body are creating what is referred to as a closed-loop feedback control system. So, if it starts to pop in my eyes, take that back into my mind and my hand says "Hey." I am no longer feeding the weight up and down It pushes my hand this way so my brain is taking all that information and It responds by telling my hand to move this way at a specific speed in order to compensate. So, to keep this thing balanced there is this constant cycle of quickly gathering information and then making real-time adjustments and closed feedback.

Rings are used throughout the geometry of the simple case of which heat It constantly checks the air and operates at a certain temperature to Dart boards that refresh their position 200 times a second to get to the correct position every time To machines that have definitely been misused for anything that flies and needs to stay in the air the fact that his board is Missing gyroscope and accelerometer It means there is no way for that to know if it has started rotating or falling in any direction This is the equivalent of trying to balance a board on your hand while you are closed-eyed and wearing an oven glove You have no idea what adjustments need to be made to keep things in balance. This is perfect to talk about the fourth mistake Notice how these motors are attached and rigidly fixed to the dual-stick telephone bar This means if you start to hint forward You have no way to correct the phone Direction, and it will only turn down, if you only have two propellers in this configuration They both need to be able to rotate with respect to the phone in order to correct movements in all six degrees of freedom For example if the hint starts forward You can rotate it again like this To correct it.

Or if the wind is trying to rotate the phone in this way, this configuration can be assumed Counter that to return to our balance shovel analogy by fixing the actuators directly to the case Even lose your ability to make corrections So not only do you have no idea where to move, but your arm is blocked for making adjustments anyway Making it impossible to strike a balance.

My final physics problem with this video is one of the acoustics This person use it as a hands-free way to watch your favorite super music videos Easily dubbing the audio here For reference, this is what a desk ring would look like on a full-size phone And don't forget, you'll actually need 13 more engines from this, so you'll be at least six times higher. Yet we have meticulously established many of the physical laws that have been broken. Let's find out exactly how he faked it and to do so I arranged a video call with the undisputed heavyweight champion of fake videos using special effects Captain Illusion Make sure to get it as far as possible against your skin to reduce the folds that might make it difficult Key exit Good and tight Hello, You did not have to call now, it is the second I'm actually 5 minutes late So lose it How can I help you? Did you not see the video that you sent? Ah, yes, of course the drone mobile video I totally analyze this sign and my conclusion is that it is absolutely real Seriously, yes Everything except for the mobile drone portion, and this is a bogus If you look Very close You may be able to notice Chat mask on the side of the phone She should be visible in every shot of her Fly Creator in a hurry because it's so messy here He cuts the edge of the phone here with the tip of his finger, and here he reveals the thing It should be hiding a penis that is narrow, light colored, and may be attached to the same mounting tape Which used to be used with all tools That is why he is able to grab and adjust the phone in this shot from the river the mask does not just hide the stick But the person holding it seems closer to this location in real time Water and on this side a fixed frame from a blank version of the shot And if we track the location and rotation of the phone, we can easily Reverse engineer exactly how Dmitt rotates the stick mostly from the point where he is held That was impressive Thanks for taking the time my favorite part of all this is the sound Small fans should have made a little bit of remote noise.

Did not give a suitable drone pilot So the hoaxes recorded the motors closely and reused the same clip in every scene With their mysterious voices in the background Great, thank you very much However, despite the likes and number of posts, messages and tweets Presumably from people with eyeballs who ask me if this painfully apparent adjustment is real over and over again. Well, the captain will take care of that.

How can you do this to me How can you do this? It's fake and now you know The reasons, but it is still an interesting idea and I want to try it G build one without the special effects So naturally, I called my friend Peter Schier, who has the right specs And we built an electrical circuit and started working Obviously if you take two brushless motors into electronic engine speed controllers and a flight controller that actually has a gyroscope and accelerometer Incorporating a 3D printed frame and two devices to illustrate the radio rotation The transmitter to remote control and force the LiPo battery and then put them all together it actually works. We kind of had to do a bunch of test flights to calibrate that Feedback control loop we talked about before So if we notice that the drone is either under Compensation or compensation is more when you start to fall a certain way We pinch the response Sensitivity between trips until we get to the sweet spot, and I would like to remember how the motors from the video are barely fake Lift only six quarters.

Well if you put the right size on the task at hand, they will be able to lift 150 classes. And so we once felt we were in good shape. We took it on the first test flight He's in our defense it was windy here But as you can see, it can be wobbly at times the truth is a bike chopper like this works perfectly It is not just a great design option. The reason is largely why all camera drones are quad copters because they are more stable due to the larger footprint shared between the four engines By adapting to the throttle speeds, you can move in all 6 degrees of freedom without moving parts So you go with solid geometry. You don't need hidden bars or masking and launching Photoshop and can walk Isaac Newton again Rest in his grave. So, the morals of the story are just not cheating and lie in the scandal Actually I want to indulge your amazing maker But then, I check out some other videos of him like this knee brace In theory, it charges your phone and so this lamp works while you walk I'll skip the details But in reality, this system will not work as shown and for this reason if you intend to do so and settle in The pocket you can see click the hidden flash light switch.

If you want to build a flying photo grabber You can watch the video by Peter with all the exciting details. You can find this on their channel or on their new website I created on this site and named Mark Rover build instructions.com You'll actually see building instructions for a large number of different projects from my channel, which have been made possible by the people on wix.com I wanted something simple and elegant and just felt a little guilty I could do something deranged and it only took an hour in part. Thanks for a series of questions You answer her when she starts This basically means You are close to what you want But you can still customize it as much as you want from there Including placing it in one of the hundreds of forms it owns and my website is just a simple way to communicate information But you can create one for your personal or your own brand Or maybe a new business website for your business to sell things, or even book appointments there.

You can log in for free The design and publishing startup is honestly a lot of fun. So, to bend your creative muscles for the whole world to see go to wix.com And use the video description link to get started Thanks for watching.

As found on YouTube