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

How to reuse your smartphone | Best mobile phone reuses

Hi friends, welcome to my latest video. Today, I am going to tell you about
12 Uses for Your Old Smartphone. I hope you still have them.
So let’s get started. But before going ahead, please do not
forget to subscribe my channel and to click to that bell icon, so that you can receive
notification for all my new and latest videos. Do you have an old Smartphone
lying around? Repurpose it!. There are a number of ways you
can reuse that old mobile device. We each carry around with us a little super
computer that can fit inside our pocket. It does everything we could ask it to do, it
checks the weather, searches the internet, plays games, streams media, takes pictures,
and analyzes data.

Smartphone are great, except for the fact that newer, better
versions are always on the horizon. Most of us can probably eke out
a few years with our smartphones, but the upgrade cycle means, it’s always
tempting to splurge on a shinier model. You can usually save a few bucks by trading
your old phone in when you buy a new one, but there are times you might end up with
an extra, aging smartphone hanging around. Instead of letting that
phone collect dust, reuse it. If it connects to Wi-Fi, it can still be a
handy addition to the household. Here are a few cool things you can do with your old smartphone.
If you have an old phone that’s no longer in use, turn it into a home security camera. Download
a security camera app like Alfred on your old and new device, then mount the old phone
where you need it. You can use something as simple as a suction cup mount for the car;
just make sure the device has access to power. Now you can use your current smartphone to log
in and view the feed from your old smartphone. Turn that old smartphone into a camera for
the kids.

Pixl Toys sells the Pixlplay Camera, which houses a phone inside a protective case
that resembles a classic camera. Together with the companion app, your child can take and edit photos
right on the device. You don’t need a wireless network for the camera to work and any images can
be transmitted via Wi-Fi or a wired connection. Pixl says the device fits most standard-size
smartphones including the iPhone 4/5/6/7/8/X and many Android phones as large as the Galaxy S8,
but won’t work with iPhone Plus or XL size phones. Of course, you could just hand your
kid the phone and let them snap pics without the Pixlplay, but you might
want a add a case or screen protector first. There are a ton of different mobile games
for iPhone and Android, and many of them don’t require an internet connection. If
you have an extra smartphone lying around, why not make it a dedicated gaming system?
Blow off some steam while you’re lounging on the couch, or fire up a game once
the kids are done taking photos. If you find yourself communicating a lot via
Skype, FaceTime, or any other video chat platform, your old smartphone can serve as a
dedicated interface for video chats, as long as you have decent Wi-Fi coverage.

The
kids no longer have to borrow your phone to call grandma or their friends, and your smartphone
remains open for incoming calls and other alerts. If you don’t have a webcam for your desktop
computer or your laptop is on the fritz, you can turn to an old smartphone. Free software like DroidCam and EpocCam let you
turn a smartphone into a webcam for your computer. Smart devices like the Echo Show 5 and the
Lenovo Smart Clock can help you manage the time, but not everyone wants a
microphone in their bedroom. Instead, turn that old smartphone’s
big display into an alarm clock that (hopefully) won’t spy on you.
Just download an alarm clock app via Wi-Fi, place your phone on a stand, and you’re good to
go.

If you tend to hit snooze in the morning, it’s easy to grab the phone off its stand and
keep it with you as you catch some more sleep. Most media streaming devices come
with their own remote control. But those remotes tend to be a little small.
Whether you own an Apple TV, Fire TV Stick, or Roku, chances are you will (or already have) lost
its remote. Instead of buying a new one, though, you can use your phone. Each service has its
own mobile app; download it on your old device, link your account, and use your phone as a remote.
If you love books and comics, but don’t want to purchase an eReader, use your phone.

Download
the Amazon Kindle app on iOS or Android, and sync up your purchases, Prime
Reading, or even free e-books. On iOS, you’ll have to purchase e-books on the Amazon
website first (since Amazon doesn’t want to give Apple a 30 percent cut of in-app book purchases),
but when you log into the iOS app and refresh, your books will be there. Or read via Apple Books.
Comics fans, meanwhile, can tap into Comixology, Marvel Unlimited, or DC Universe; here are
some of our favorite digital comic books. If you have an Audible account, meanwhile,
download the app and listen to your favorite books.

Carry your old device around
the house with you, or connect it to a Bluetooth speaker for surround-sound literature.
If you subscribe to a music-streaming service, you have access to just about any song ever made.
Set up your old device up on a charging stand, and pop in some wireless earbuds or connect your phone
to a Bluetooth speaker. Then crank up some tunes or listen to a podcast while cleaning the house,
getting some work done, or just vegging out. As long as your old smartphone still turns on,
it’s probably just about as powerful and capable as your late-90s desktop. So, why not “donate”
some of those unused resources to a good cause? Currently just for Android, you can
download the BOINC app (Google Play), which was developed by the University
of Berkeley to harnesses your device’s unused computing power for crowdsourced science.
You can help use computational power for health and sustainability research with IBM’s World
Community Grid or assist [email protected] in trying to avoid the planet getting hit by an asteroid,
and other such projects. Choose which project you want to help, hook it up to your local Wi-Fi,
and help our species progress into the future. US law requires that all phones be able to
call 911, even without a SIM card or connected data plan.

That means no matter how old your
phone is, as long as it has power, it will be able to connect with emergency services. Even in
conditions where there would normally be limited service, the call should be able to go through.
While you will probably have have your phone on you at all times, it can’t hurt to
have a backup device just in case. For instance, you could keep an inactive
phone in the car in case there’s an emergency. You can also give the decommissioned device to an
older relative who might not have a mobile device, but could use an easy way to contact
emergency services just in case. Thanks for watching, untill next
time, take a good care of yourself..

As found on YouTube

Android N Tip – How to enable split-screen multitasking

hey guys come here from 9:00 to 5:00 Google and Android n has been available in the form of a Developer Preview now for a few weeks and it's already into its second preview and part of this upcoming major software update is the baked in ability to have two apps side by side on the same screen this is otherwise known as split-screen multitasking here's how you use it now right now there are a couple of methods for activating the split screen a method one is what I call drag-and-drop within Android n when using any app or even on the home screen you can tap the app switcher icon that's the square one on the bottom right of the screen and most phones this launches the familiar card based multitasking window now we tap and hold one of these apps that you'd like to have on screen then drag it up to the top half of the screen or to the side and once you've done that the app will take up the top half of your display assuming you're holding it in portrait and not in landscape mode the bottom half will show the app switching screen then you tap on the second app you'd like to have on screen and then you have two apps running side by side on the same screen now the second method requires a little bit more in terms of digging into the software but once it's been activated it's actually a lot easier now first what you have to do is enable system UI tuner within the settings menu this means you need to swipe down from the top of your screen until the full notification shade and quick settings tiles are on display now you'll notice a settings cog in the top right hand corner you press and hold this icon for a few seconds until it starts spinning once you let go you'll see a pop-up alert on screen for a short while telling you system UI tuner has been added to your settings options one system UI tuner is active you go to settings system UI tuner then hit other and then tap the toggle to enable split screen swipe up gesture once this is active you can simply swipe up from the app switching button that's the square one again and it'll launch the split screen mode now once activated apps take up an equal portion of the screen as default with the split right in the middle you can adjust where the split goes just by touching and holding the middle split and moving it wherever you want up and down the screen what's more as hinted at previously this split-screen mode works in portrait or landscape so if it's active you rotate your phone so that it's horizontal and the split screen apps arrange themselves side by side instead of above and below each other when the split screen is activated you'll notice that the app switching single square icon that we've been talking about has turned into two parallel rectangles now if you want to while it's active you can actually hide the apps by pressing the home button what this allows you to do is it allows you to select the secondary app that you want to run in split screen mode just in case the one that you want didn't show up in the initial options now like with launching split screen mode there are a couple of methods for canceling it too first off you can press and hold the split screen app switching icon second you can just drag the app splitter until it's right at the top or the bottom of the screen filling your display with a single app now of course split screen mode has been designed predominantly for tablets but it means that you can drag and drop content or copy and paste text from one app into another without having to keep on switching between two different apps it certainly can make you more productive especially on a tablet now it's important to note that because this is beta software for now the methods and exact UI may change over time but we'll be sure to update the post linked in the description box if anything changes majorly to impact you by the time the software is available as a public release it's also worth noting that apps need to have split-screen compatibility so some apps will support it and some won't at least initially I've been camera mat cam Bunton on Twitter and I'll see you again soon you

As found on YouTube

Sony Xperia 1 review: a tall order

The thing that I like about Android is there can be so many
different kinds of phones, just a lot of weird choices. But lately, it seems like
there are really only two choices, at least in terms of screen size. There's regular and there's extra large, which is why I was so excited
to try this phone right here, the Sony Xperia 1. I mean, just look at this good tall boy. It's got a 21:9 aspect ratio, which makes it relatively
narrow and super, well, tall. I think it's a fascinating phone, and it's way nicer than
I expected it to be. But I don't think it can
really justify its $950 price. Let me tell you why. Now, a lot of people would
like to have a big-screened phone, but they're put off by
how big these phones feel.

And that's the reason I like the Xperia 1. It has a big screen, there
is no doubt about it. It's 6.5 inches. But it's quite a bit narrower
than this OnePlus 7 Pro here. So you get the benefits of
seeing more stuff on your screen, like on the web or on Twitter, without the drawback of
feeling like you have a big honking glass slab you can barely wrap your fingers around. This phone is also really good if you like to do split-screen apps, which… I don’t know, I guess
people still do that. I never do. Anyway, it's nicer to hold, but that doesn't make
it a one-handed phone by any stretch of the imagination.

You're still going to need
to use your second hand to reach the top of the screen. Sony has a couple of
software tricks that help with how tall this phone is, but neither of them are great. You can double tap the home button to make a smaller version of the screen. Or there's this other thing with… Er, wow. What are you
doing there, Chuckles? Huh. Sorry, let's back up. Or you're supposed to be able to tap either side of the screen or swipe on it to do other stuff. It's called Side Sense,
and it kind of sucks. I can never get it to
work when I want it to, and it pops up all of the time when I don't want it to.

Now the reason that Sony
says it made this phone at this weird, tall aspect ratio is for watching movies, and Sony says that it
has a 4K HDR OLED screen. It also has, quote, “professional
level color reproduction.” So it can be in the DCI-P3 color gamut. It can also be in the BT.2020 color space if you care about that. And it has the D65 white point. There's this whole “Creator Mode” thing. Basically, Sony is
trying to make this phone appeal to people who really
care about video quality, both watching it and recording it. But Sony, the thing is, if you're going to do that, this screen should get way brighter. It is way more dim compared
to other OLED screens. Anyway, yeah, I will say
watching a 21:9 movie on this phone with its Dolby
stuff, without letterboxing or weird camera cutouts, is great. But the truth is that most
of the video that I watch is not 21:9.

It’s stuff on YouTube, and so I still end up
having big black bars on the left or the right. Or, if I expand it full screen, I end up cutting off people's heads. Now, I do think this phone is pretty good from a build quality perspective. It's got Gorilla Glass and IP68. It's got some bezels,
but they're not too big, and it's just nice to hold. But, you know, of course
there's no headphone jack. But there's no getting around how it being this tall
makes it really awkward. It's so tall, it couldn't
fit in my pocket. I was sitting down, and it just slid right out of my pocket and clattered on the concrete, which is why there are dings on the edges of the
phone on our review unit, which is sad. The buttons are also awkward.

They're all on the right side of the phone and, I don’t know, the fingerprint sensor is separate from the power
button for some reason. And sometimes it gets a little dirty and you have to wipe it off
before it will actually work. I do like that there is
a dedicated camera button. But overall, when I'm
trying to use this phone, I just end up hitting the wrong button, like, all of the time.

On the back, there are
three 12-megapixel cameras. There's a regular, a 2X
telephoto, and a wide. Sony put some nice optical
image stabilization on the main lens, and you know what? Finally, Sony has made
a phone with a camera that's pretty good. It's not quite as good as a Pixel 3 or a OnePlus 7 Pro to my eyes, but it's finally respectable.

I do wish that the
telephoto was more than 2X, but the wide angle one, it's really fun. I kind of love it. But I don't love Sony's camera software. The wide angle thing makes you pick between prioritizing image
quality or distortion. The auto made doesn't do HDR by default, and there's just a bunch of other settings that just really look
and feel kind of silly. Anyway, let's get into the results of what I actually get
out of these lenses. I think that Sony
prefers leaving detail in, even though that also
leaves in a bunch of noise. It also doesn't do as
aggressive HDR as I would like unless you have to, you
know, manually turn it on.

But the thing that did surprise me is that even though there's
no dedicated night mode, sometimes it actually
really nails it anyway, even if it's incredibly dark. Now, you can shoot 4K, and
that's one of the reasons this phone exists. And so Sony also
included a Cinema Pro app that lets you really dial
in all these manual settings for shooting 4K video. Unfortunately, the 8-megapixel camera on the front is junk.

It's really not good. I don't know, man. If this phone didn't cost $950, I'd probably be a little
bit less nit-picky, but you know what? It does. So I am. In terms of software and performance, I actually don't have a ton of complaints. It's a fairly clean version of Android 9 with just a few bells and whistles. It has a Snapdragon 855 processor so it's fast, and there's 6GB of RAM, which is decent, but not stellar. I am a little bit grumpy that there's only one storage option:
128GB of storage. If you're going to want more, and especially if you're
going to want to shoot 4K, you're going to need to expand it. And you can because there's
a microSD card slot. Battery life is
average-ish for big phones. I'm getting over four hours of screen time, and it's lasting through a day, but there's only a 3,300mAh battery in here, and I kind of feel like that's not enough.

I would be happier with that if there was wireless
charging on this phone. But no, there's not. It does do fast charging, but one neat thing Sony does is it won't fast-charge when it knows that you’re charging overnight, which helps with the overall
life span of the battery, which means it should last longer, a year or two for now — at least in theory. Now, after all that, if you're still interested in this phone, you should also know
that Sony as a company has kind of been deemphasizing phones since it hasn't been
really successful with them in the past few years.

And that kind of makes sense, and I also think it makes sense for Sony to try something new and move into this niche
of making tall boys, like this guy right here. Now, of course, you can spend less money and get a better phone
like the OnePlus 7 Pro, but what you can't get is any other phone in this tall aspect ratio, so I like the idea of this form factor. I think that it should exist in
the world of Android phones. So I'm glad that Sony's
trying to make 21:9 happen. But I don't know that I'd
recommend this particular phone to anybody. If you really, really,
really love the tall screen or you really love what
Sony does with video, then maybe.

But there's no getting around the fact that this is an expensive phone. For $950, I expect more,
and you should, too. Hey, thank you for watching. Do you want a tall phone? Let me know in the comments below. Also, if you're wondering if
there are other tall phones, we did review the Xperia 10 last month. It's kind of the same idea but cheaper and also, it's really bad for a whole other set of reasons.

But if you want to see a
review of a good big phone, click here..

As found on YouTube