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Dive into the fascinating world of telecommunications and innovative energy solutions in this captivating video.
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00:00So, we all have personal phone numbers.
00:02You probably know your own and the numbers of your loved ones by heart.
00:06But have you ever wondered what these digits mean?
00:09Plus 11 or plus 2, plus 3, plus 4?
00:12Why are there different numbers in different countries, and who invented them?
00:16Well, let's figure it out.
00:18There's a large worldwide organization called the International Telecommunication Union, or ITU.
00:25It's one of the 15 specialized institutions of the United Nations, which is a global organization that deals with security,
00:32diplomacy between countries around the world, and many other important things.
00:36Among its duties is the establishment of telecommunication links, and this is the area of responsibility of the ITU department.
00:44People in this union assign different codes to countries and coordinate international communication.
00:50They've divided our planet into 9 regions.
00:53Depending on the region, each country has its own prefix, a digit that denotes a country code.
00:59When you type plus on your phone and then the first digit, your phone automatically connects to the phone lines
01:05of the specified region.
01:06The following numbers narrow the radius of this region to one point.
01:10In simple words, first, you select a continent, then a country, then a region in that country, then a cell
01:17tower in a particular city, and finally, the subscriber's registration number.
01:21For example, the countries of the North American numbering plan group have the number plus zero zero.
01:28To call an African region, you need to type plus two and put a specific country code.
01:33The regions with codes 3 and 4 are in Europe, so each number represents its own region.
01:39You can easily find the table with region codes on the internet.
01:43Do you know that people began to widely use wireless communication only in the 90s and 2000s?
01:49Before that, every house had one stationary phone.
01:53And you're making me feel old here.
01:55Some of such phones had buttons with numbers, others had disks.
01:59To dial a number, you needed to put your finger in the hole with the needed digit,
02:04move the disk around with your finger, and wait until it returned to its place.
02:07After that, you had to choose the next digit.
02:10Yes, you needed something called patience to work with phone tech back then.
02:15Since we're moving into the past, let's find out how it all started.
02:19Alexander Graham Bell invented the first telephone in 1876.
02:24In 1877, people set the first long-distance telephone line stretching through Nevada County, California.
02:31At that time, it was something incredible.
02:33Talking to a person 10 miles away was something out of science fiction.
02:38The invention quickly spread around the world.
02:41If, at the end of the 19th century, only rich people could afford it,
02:45then, in the 20th century, the landline phone became a common device in almost every house.
02:50The number of users reached hundreds of millions worldwide.
02:54But then, wireless technology came along.
02:57In 1973, Motorola introduced the first prototype of the wireless phone.
03:02But only 10 years later, it went on sale.
03:05This heavy device was the size of a brick and weighed 2 pounds.
03:10It could store 30 numbers and had a battery for 60 minutes of operation.
03:14For the next 20 years, the popularity of such phones increased.
03:18Then, in 1993, IBM introduced the first smartphone.
03:23Two years later, the device officially appeared on the market for $1,100.
03:28In six months, more than 50,000 phones were sold.
03:32The first smartphone was equipped with a touchscreen.
03:35It could send and receive emails and faxes.
03:37Ooh!
03:38It had a calendar, an address book, and a meeting planner.
03:42Also, it had a touch keyboard and stylus.
03:45In 1995, the number of wireless subscribers was about 35 million people.
03:51In 2008, this number increased to 270 million.
03:55During this time, about 25% of American homes abandoned landlines.
04:00When the first phones began to spread at the beginning of the 20th century, inventor Nikola
04:05Tesla predicted the appearance of smartphones.
04:08He said, in 1926,
04:10When wireless is perfectly applied, the whole Earth will be converted into a huge brain.
04:17Well, he predicted that people would not just communicate with each other, but would also see each other from 1
04:23,000 miles away.
04:24He added that all people around the world would be able to put these devices in their pockets.
04:30Wow!
04:31Phones have changed not only communication, but also the world economy.
04:36Thanks to the mobile industry, 14 million jobs have appeared in the world.
04:4017 million other jobs also benefit from this industry.
04:44For example, companies that deal with cameras and lenses for smartphones.
04:48And the number of jobs is constantly growing.
04:51Now, perhaps, you have no idea how powerful the device in your hands is.
04:56Your smartphone is more than 1,000 times more powerful than NASA navigation computers from 1969.
05:02They had 64 kilobytes of memory and operated at a frequency of 0.043 megahertz.
05:09Yeah, I don't know what that means either.
05:11But a pocket calculator or even a USB-C charger has more computing power than the best computers which people
05:19use to send astronauts to the moon.
05:21Do you know that there is real gold in every phone?
05:25Developers put gold in phones because it's chemically stable and conducts electricity well.
05:30Basically, this precious material is used in circuit boards.
05:34To get 0.3 ounces of gold, you need 1 ton of ore or 21 smartphones.
05:40And a whole ton of phones without batteries will give you 10.5 ounces of gold.
05:45People extract about 2,700 tons of gold from ore per year.
05:50That's 7.5 tons per day.
05:52If they started extracting the same amount of gold from smartphones,
05:56the entire population of our planet would run out of phones in 23 days.
06:01Your phone has the Ingress Protection Rating, or IP rating for short.
06:06It shows how waterproof your phone is.
06:08If you have zero, there's no water protection in your device.
06:12If you have nine, then your phone is protected from high pressures and temperatures.
06:17You can find the information in the instructions or on a special website.
06:22Almost 90% of phones in Japan are waterproof because, in this country,
06:27people like to take their phones with them when they take a shower.
06:30Yep, it's a thing.
06:32Wireless phones made the revolution.
06:34Then, the first smartphone brought new technologies.
06:37The next revolution occurred in 2007, after the presentation of the first iPhone.
06:43Since then, many phone developers have begun to repeat the design of Apple devices.
06:47It was fashionable and practical.
06:50Such a design is technically perfect.
06:52The gadget sits comfortably in your hand and has a large screen,
06:56helping you absorb information better.
06:59Until 2007, phones were very diverse.
07:02Some were quite strange.
07:04Motorola V70 was a phone with a 360-degree rotating keyboard.
07:09It looked like a spinner, but it didn't gain much popularity.
07:13In 2003, Nokia 7600 was released.
07:16This phone had the shape of a drop, and its keyboard was located around the screen.
07:22IRP 7 pen phone doubled up as a pen.
07:25But at the same time, it looked like a TV remote control.
07:29The most expensive smartphone in the world is Falcon Supernova iPhone 6.
07:34Its case is made of platinum with the addition of 24-karat gold.
07:39And on its back cover, you'll find a large diamond.
07:42The price of this device is 48.5 million bucks.
07:47Apple is not only improving its devices, but also adding Easter eggs inside of them.
07:52Here's some of those.
07:53You can go to Safari browser, open any website, and click the Share button.
07:59Among the extended functions, you'll see Reading List.
08:02The symbol of this function is Steve Jobs' round Lunar glasses.
08:06The icon design of the Maps app is constantly changing, but it always shows an actual address.
08:13It was the old Apple campus, but then it shows the address of the new Apple Park.
08:19The Apple quote, Think Different, is encrypted in the virtual keyboard in the book emoji.
08:24But to see the inscription, you'll need to extract the source file with the emoji and enlarge it.
08:30Because of its small size, you won't notice the quote on the phone screen.
08:33The sound wave icon in the voice recorder makes sense.
08:37Turn on the app and pronounce Apple.
08:40The phone will record a track with a similar sound wave.
08:43So many tricks, gadgets, and whatnot, and so little time.
08:47Bye!
08:48Ta-da!
08:49We're presenting you something cool called Solar Tree.
08:53Well, it's not actually a real tree.
08:55More like a solar and storage system in the shape of a tree.
08:58One company from London officially presented it recently, and their goal is to power EV charging stations, where EV stands
09:07for electric vehicles.
09:09Trees here produce clean electricity.
09:12The company has created these solar trees because they wanted to harvest power into an energy storage and management system,
09:20EMS, that AI runs.
09:22That system will both release and regulate all the power, and we'll be able to see the first generation of
09:28these solar trees in early 2023.
09:32I don't know what you think about it, but I can picture one of these in my backyard.
09:37You're chilling, having a cup of coffee hidden under a treetop, and you can charge your laptop or a phone
09:42without having to go inside.
09:44But we probably won't be able to afford it right away.
09:47The company has decided that they want to focus first on rapid electric vehicles, and they say that these trees
09:54will be cheaper once they're mass-produced.
09:57I still got a chance!
09:58The tree has thin-film solar cells.
10:02It can produce 5 kilowatts.
10:04That's enough to power a fridge, washing machine, air conditioner, oven, water heater, and TV.
10:10This is not the first time someone's come up with a thing that kind of combines botanical and solar.
10:16Have you heard of the smart flower?
10:18It looks like a giant robotic daisy.
10:21Smart flower has enough power to charge your kitchen appliances.
10:24So, how do solar trees work in general?
10:28They absorb sunlight with their leaves.
10:30The leaves are photovoltaic, which means they convert light into electricity.
10:36The electricity then goes down through the central pillar that looks like a trunk and ends up in an internal
10:42battery.
10:42Some designs have rotating panels that move throughout the day so the tree can catch more sunlight and, by that,
10:50produce more electricity.
10:53When you build a solar power plant, customers will mostly get a power purchase agreement where it says they can
10:59expect it to last 20 to 25 years.
11:02It doesn't mean your plant will become worthless after that.
11:06In reality, its infrastructure is really stable and panels will probably last 40, maybe even 50 years.
11:13And you can replace them with new modules that will be even more efficient after that, at a relatively low
11:19price.
11:20We need more sources of energy now because there are more and more things we need to charge.
11:26Like this Adidas Alrela match ball.
11:29When you first think about it, yeah, it's weird to imagine you have to plug in your football and charge
11:34it like it's a phone.
11:34But, months before the World Cup, we got the news this was really happening.
11:40There will be a match ball with AI sensor technology.
11:44The point of the ball is to make referee decisions more accurate.
11:48It also collects data and statistics of matches so people can analyze games better.
11:57You need to charge it before every match to make sure its built-in sensor will work.
12:01When fully charged, a battery can last for 6 hours.
12:05And we're talking about active use.
12:08If you don't use the ball, it will last 18 days.
12:11When a ball goes out of play during a match and players replace it with another one,
12:16there's no need for anyone to do anything about it.
12:19The system automatically activates the sensor of the ball.
12:23Solar power is one energy source we have the most on Earth.
12:27Every hour, solar energy hits our planet so much that it could meet the yearly power needs of the entirety
12:34of humanity.
12:35Plus, it's the source where we can get energy the fastest.
12:40Do you also avoid keeping your phone plugged in overnight?
12:43It's not actually such a big deal as most people think.
12:46You won't ruin your phone by doing that.
12:49Smart technology works in a way it stops the battery of your phone from charging when it's full.
12:54Your phone also knows it needs to start charging again if your battery empties a bit when it's still plugged
13:00in.
13:02It's completely safe to leave my phone in a public charging port.
13:06Myth.
13:06Better avoid it because that's how you put your information at risk.
13:10Cords you see at airports and restaurants are not just a power source.
13:14Like, for example, when you plug the lamp into the wall.
13:18Cords create a path to transfer your data too.
13:21So when you're charging your phone at those public ports, someone can access your phone easily.
13:26That includes texts, emails, photos, and everything you have there.
13:31It's better and safer to use a portable charger.
13:35You know when you buy a new phone and everyone tells you you should fully charge it before using it?
13:39Well, you can do it if you want to, but it's not necessary.
13:44Manufacturers mostly say it to make a good first impression.
13:47By the time you hold your new phone in your hands, manufacturing and testing have possibly drained up to half
13:53of your battery.
13:54So, if you expect your new battery will last 8 hours and in reality it only lasted 4, you may
14:00get the wrong impression about your new phone.
14:04Another one.
14:05I could leave my phone on efficiency mode all the time.
14:08What's the harm?
14:08Well, it's not an actual myth.
14:11Nothing bad will happen to the software.
14:13But, if you put your phone on low power mode for most of your time, you might have a poorer
14:18user experience since your phone simply gets rid of any extra thing.
14:23Sound won't be as loud as you usually like.
14:25You'll hardly see your screen because of low brightness.
14:28Plus, apps won't check for notifications all the time.
14:31But, approximately every 10 minutes or so.
14:34Low power mode is great if you want to take a break from gadgets though.
14:38My friend told me I shouldn't charge my phone until it reaches zero and turns off.
14:43I had to check that one and, as expected, it's not true.
14:47It's better to charge the lithium-ion battery before your phone runs out of juice.
14:52This type of battery kind of forgets when its maximum capacity level was.
14:57So, when you recharge it, your phone's battery might not recharge to its initial level.
15:02It may lower its capacity because it thinks it's on 100%.
15:07Even one app can take up tons of your battery, sometimes up to 20%.
15:12For example, some social media apps drain up your phone's battery since they're constantly doing things in the background,
15:19even when you're not doing anything there, like checking status updates, messages, and so on.
15:26It's useless to turn off your phone when it comes to saving your battery.
15:30Not true.
15:31Most of us don't fully close apps even after we stop using them.
15:35The more of them are running in the background, the shorter your battery life will be.
15:39So, turn off your phone at least once a week to close them all.
15:43Let's say when you're watching a movie or having a long meeting at work.
15:47That way, you have zero tasks in the background as opposed to those 20 or even more tasks every 10
15:53minutes.
15:55Nothing will happen if you touch your phone while it's plugged in, even though some claim differently.
16:00It's just that it will take longer for a battery to charge, so avoid using it if you don't have
16:05that much time.
16:07Here's one of my favorite myths.
16:09When you lose your charger, save some money and buy an off-brand one.
16:14That could damage the battery of your phone since these chargers might not have the standards in place to fill
16:19the battery with the correct voltage.
16:22No need to hit eject when you're taking your phone out of the computer.
16:26Not.
16:27If you don't hit eject, you could damage your files or keep the phone from finishing backup.
16:34And don't worry if you have Wi-Fi searching on all the time.
16:37It takes some energy, but not that much.
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