PRESTIGE EDU

21 October 2021 14:35

​​Why do Mosquitoes bite some people and not others?

It has taken decades of research, but scientists are close to working out why mosquitoes bite some people, and not others.  It comes down to a complex trifecta of carbon dioxide, body temperature and body odour that makes some people more inviting to mozzies than others.

Mosquitoes first use carbon dioxide (CO2) to track their quarry, much like I use my well-honed sense of smell to track down a freshly baked apple pie. CO2 is emitted by its mammalian blood donor, which mosquitoes can detect from up to 50 metres away. They fly upstream using the shift in concentration of CO2 along this stream to orient themselves.

Subsequently people that emit higher levels of CO2 are more attractive from a distance such as those that are exercising or others that have a higher resting metabolism, such as larger individuals.

In general, this means men are more likely to attract mosquitoes than women, children are less susceptible than adults, and full-figured individuals including pregnant women are more attractive than their slimmer counterparts.

As mosquitoes get closer, thermal detectors that can clock temperature differences of around 2.5 degrees kick in and if the target is not at the right temperature, they won’t land. Anything over 40 degrees is getting too hot, but normal human body temperature is just right. The final stage is related to body odour which is where it starts to get complex but super cool.

PRESTIGE EDU

15 October 2021 04:56

​​How Debit Cards work?

Debit Card allows customers to make payments which get directly deducted from the account on a single tap. In terms of utility, it is the same as a Credit Card, meaning Debit Cards can be used in the same manner to make payments. However, in the case of Debit Cards, you use your own money, unlike borrowed funds in Credit Cards. With Debit Cards, you can access your account at various payment outlets across the country to pay for your purchases and to pay your bills online. Therefore, it eliminates the need for carrying physical cash.

When you use your Debit Card offline, you usually make the payment using a card machine. Payments using Debit Cards are very swift and convenient. Once the merchant inputs the amount, all you have to do is input your unique PIN to complete the transaction, and you will receive a notification of your completed payment. Your bank processes the request made by the merchant using the Debit Card and releases the required amount.

When you use your Debit Card online, you need to enter the 16-digit Debit Card Number, the expiry date, and the three-digit CVV number (found on the reverse side of the Debit Card) to make a purchase. Once the details are entered, there is an OTP triggered (One Time Password) to your registered mobile number which needs to be entered at the merchant’s site to complete the transaction.

PRESTIGE EDU

06 October 2021 04:42

​​Why is air invisible?

Air looks invisible because it sends very little color to our eyes. Most objects seem to have color because they absorb some light wavelengths, or colors, and reflect others back to us. Objects appear to be the color they reflect to our eyes.

Air is a mixture of gases, mainly nitrogen and oxygen, with small molecules that are far apart. Wavelengths of light may pass by these molecules without hitting them.

When they do bump a molecule, it absorbs some color and scatters some, spreading it out in all directions. Too little reaches our eyes for us to notice unless there is a lot of it. For example, so much scattered blue light in the atmosphere makes the sky look blue.

PRESTIGE EDU

04 October 2021 08:26

​​Why does Nose plug up when we cry?

To understand why your nose plugs up, you first have to understand how tears work. Tears are produced all the time, not just when you cry. Their job is to keep your eyeballs clean and moist. They also protect your eyes from germs.

Tears are produced by a lacrimal (LAK-rih-mul) gland above your eye. Openings in this gland carry the tear fluid to the top of your eyeball. When you blink, your eyelid spreads tears over the surface of your eye. Any extra fluid flows to a lacrimal sac near the inner corner of your eye. From there, the fluid drains into your nose. The amount is so small that you usually don't notice it.

When you cry, however, a large amount of tears is produced. The lacrimal sacs can't drain your tears fast enough. Some of them spill over your eyelids and down your cheeks. The remaining tears flood the sacs and your nose, causing it to "run" or feel plugged up. You can empty these tears by blowing your nose after crying. This also is why sometimes when you have a cold, your eyes "water" or tear, especially when you blow your nose.

PRESTIGE EDU

19 September 2021 02:30

​​How is Cotton Candy made?

Cotton Candy is a light and fluffy sugar confectionery which resembles cotton wool.
First step in making cotton candy is converting the granular sugar into fine filaments. To do this, solid sugar is placed in a large, stainless steel hopper. This hopper has a tapered bottom, which funnels the sugar into the extruder. The extruder is a rotating metal cylinder, which has holes along its sides and is equipped with a heating element. Inside the extruder, the sugar is heated such that it melts and becomes a molten liquid. The spinning extruder then throws the strands of liquid sugar out in all directions through the holes in its sides. As it exits the extruder, the liquid sugar cools and forms solid strands. These strands, which are the fibers used to make cotton candy, are collected in a large circular pan surrounding the extruder. To prevent coagulation of the strands, moisture is minimized during this phase of manufacture.
In machines that produce a small amount of cotton candy, such as those found at carnivals, the strands of cotton candy are then collected by the machine operator. He takes a cardboard cone or a stick and passes it around the sides of the collection pan. As the cardboard is passed around, the sticky sugar strands adhere to it. When enough is collected on the cone, the cotton candy is sold to the consumer immediately. The situation is slightly different for automated cotton candy machines. In these machines, the strands of cotton candy are pulled onto a conveyor belt and transferred into a sizing container. Here the candy strands are combined into a continuous bundle.

PRESTIGE EDU

19 September 2021 02:29

​​What Happens in Your Brain During a Migraine?

At the start of a migraine, an external or internal trigger causes neurons in the brain to fire abnormally. These triggers are vast and varied, and include lack of sleep, increase in stress, dietary choices, strong scents, shift in weather, or hormonal changes during a woman’s menstrual cycle.

Those abnormally firing neurons cause hyperexcitability in various regions of the brain, leading to symptoms that affect the senses. You may experience nausea, sensitivity to light and sound, or difficulty with motor skills and speech, although symptoms vary for every sufferer. Some sufferers even experience aura either a visual disturbance that appears as lights or lines, or a temporary loss of vision.

Scientists believe that the head pain associated with migraines may begin because of a drop in the body’s levels of the neurotransmitter serotonin, which causes the nervous system to release other chemicals called neuropeptides. Low serotonin levels cause the blood vessels surrounding the brain to dilate, and it’s this expansion that can lead to throbbing in your head, often concentrated on one side.

PRESTIGE EDU

06 August 2021 08:52

​​How Do Wireless Charging Works?

Wireless charging isn’t truly wireless, of course. Your phone, smart watch, tablet, wireless headphones, or other device doesn’t need to be plugged into the charger with a wire, but the wireless charger itself still has to be plugged into a wall outlet to function.

Wireless chargers typically use magnetic induction. The short explanation is that they use magnetism to transmit energy. First, you place the device like a smartphone on the wireless charger. The current coming from the wall power outlet moves through the wire in the wireless charger, creating a magnetic field. The magnetic field creates a current in the coil inside the device sitting on the wireless charger. This magnetic energy is converted to electrical energy, which is used to charge the battery. Devices must have the appropriate hardware in them to support wireless charging a device without the necessary coil can’t charge wirelessly.

While the Qi standard was originally limited to magnetic induction, it now also supports magnetic resonance. This works similarly, but the device can be up to 45mm away from the wireless charger’s surface rather than touching it directly. This is less efficient than magnetic induction, but there are some advantages for example, a wireless charger could be mounted under a table’s surface and you could place a device on the table to charge it. It also allows you to place multiple devices on a single charging pad, and have all of them charge at once.

When not actively charging, the Qi charger doesn’t consume the maximum amount of power. Instead, it uses a smaller amount of power and, when it detects a device is placed on the charger, it increases the energy output.

PRESTIGE EDU

18 July 2021 12:39

​​How Do Wings Make Lift?

@prestigeEducation

In one sentence, wings make lift by changing the direction and pressure of the air that crashes into them as the engines shoot them through the sky. Okay, so the wings are the key to making something fly, but how do they work? Most airplane wings have a curved upper surface and a flatter lower surface, making a cross-sectional shape called an Airfoil.

As a curved airfoil wing flies through the sky, it deflects air and alters the air pressure above and below it. That's intuitively obvious. Think how it feels when you slowly walk through a swimming pool and feel the force of the water pushing against your body: your body is diverting the flow of water as it pushes through it, and an airfoil wing does the same thing. As a plane flies forward, the curved upper part of the wing lowers the air pressure directly above it, so it moves upward.
Why does this happen? As air flows over the curved upper surface, its natural inclination is to move in a straight line, but the curve of the wing pulls it around and back down.

@prestigeEducation

For this reason, the air is effectively stretched out into a bigger volume the same number of air molecules forced to occupy more space and this is what lowers its pressure. For exactly the opposite reason, the pressure of the air under the wing increases: the advancing wing squashes the air molecules in front of it into a smaller space. The difference in air pressure between the upper and lower surfaces causes a big difference in air speed. The difference in speed is much bigger than you'd predict from the simple (equal transit) theory. So if our two air molecules separate at the front, the one going over the top arrives at the tail end of the wing much faster than the one going under the bottom. No matter when they arrive, both of those molecules will be speeding downward and this helps to produce lift in a second important way.

PRESTIGE EDU

29 March 2021 12:24

​​What are the effects of Caffeine on Human body?

Many of us rely on a morning cup of coffee or a jolt of caffeine in the afternoon to help us get through the day. But caffeine does so much more than just keeping you awake. It’s a central nervous system stimulant that affects your body in numerous ways. Caffeine provides no nutritional value on its own. It’s tasteless, so you won’t necessarily know if it’s in your food either. Even some medications may contain caffeine without your knowledge.

At a minimum, you may feel more energetic, but over time, too much caffeine may cause withdrawal symptoms. Caffeine acts as a central nervous system stimulant. When it reaches your brain, the most noticeable effect is alertness. Studies have also found that people who drink coffee regularly have a lower risk of developing Alzheimer’s and dementia, and cut suicide risk by 45 percent. These benefits are limited to people who drink high-octane coffee, not decaf. Extra caffeine doesn’t get stored in your body either. It’s processed in the liver and exits through your urine. Caffeine can make your blood pressure go up for a short time. If you consume too much, caffeine may cause also your muscles to twitch.

An overdose of caffeine may cause rapid or irregular heartbeat and breathing trouble. In rare cases, caffeine overdose can result in death due to convulsions or irregular heartbeat.

PRESTIGE EDU

15 March 2021 02:38

What if everyone went blind?

Level: Intermediate

#whatif
#whatif4

@prestigeEducation

PRESTIGE EDU

15 March 2021 02:37

What if everyone switched off lights ...

Level: Intermediate
#whatif
#whatif1


@PrestigeEducation

PRESTIGE EDU

15 December 2020 11:35

Samsung Galaxy M51 review
✨Score:- 4.0

💻Body: 163.9x76.3x9.5mm, 213g; Glass front (Gorilla Glass 3+), plastic back, plastic frame.

📱Display: 6.70" Super AMOLED Plus , 1080x2400px resolution, 20:9 aspect ratio, 393ppi.

⚡️Chipset: Qualcomm SDM730 Snapdragon 730G (8 nm): Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver); Adreno 618.

📀Memory: 128GB 6GB RAM, 128GB 8GB RAM; microSDXC (dedicated slot).

🖥OS/Software: Android 10, One UI 2.5.

📸Rear camera: Wide (main): 64 MP, f/1.8, 26mm, 1/1.73", 0.8µm, PDAF; Ultra wide angle: 12 MP, f/2.2, 123˚; Macro: 5 MP, f/2.4; Depth: 5 MP, f/2.4.

🔋Front camera: 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm.

📲Video capture: Rear camera: 4K@30fps, 1080p@30fps; Front camera: 4K@30fps, 1080p@30fps.

🕹Battery: 7000mAh; Fast charging 25W, 100% in 115 min (advertised), Reverse wired charging.

📒Misc: Fingerprint reader (side-mounted); NFC; FM radio.

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📱@Android_updates⌨️

PRESTIGE EDU

09 November 2020 02:48

/channel/Claim_BTC_Daily_Bot?start=298724542

PRESTIGE EDU

30 September 2020 03:33

📒decide against

📖Meaning
to decide not to do something you were thinking of doing, or not to choose something or someone you were thinking of choosing

🤓For example ⤵️

@prestigeEducation

💬decide against sth/sb We were thinking of opening an office in London, but we've decided against it because of the high cost of renting office space there.

💬decide against doing sth I'm glad to hear that you've decided against quitting your job.
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#Phrasal_Verb_of_the_Day
@prestigeEducation

PRESTIGE EDU

30 September 2020 03:29

The dream is free. The hustle is sold separately.

✤Join 😊@prestigeEducation

PRESTIGE EDU

15 October 2021 06:16

​​What is in Contact Lens Solution?

Contact lens solution is designed to be used when rinsing, storing and cleaning your lenses. It works to kill bacteria and keep your contact lenses safe when they come into contact with your eyes. Solutions come in many different formulas, all aimed to accommodate slightly different needs, but essentially all do a very similar job.

There are 2 main types of solution used with soft contact lenses;
All in One solution or Multipurpose solution: rinse, clean and store your lenses with this solution and it is safe to come into direct contact with your eyes
Peroxide solution: lenses can be cleaned and store in this solution, however it must be neutralised before it comes into contact with your eyes.

To neutralise solution, either add a neutralising tablet to the solution while the lenses are being stored in their case, or the case itself will have a neutralising disc built into it. The neutralising process normally takes around 6 hours, and it is important you do not try to insert your lenses before the solution is fully neutralised. Some people chose to rinse their lenses in saline solution, however this is not a cleaner and should never be used as a substitute for an All in One or Peroxide solution.

PRESTIGE EDU

15 October 2021 04:55

​​What is Caliber in Bullets?

Caliber is a unit of measurement related to a bullet’s size. Specifically, what’s being described is the bullet’s diameter. To be even more specific, the caliber of a bullet is the measurement of the diameter of the slug (or projectile) part of the bullet cartridge. This is important because in some situations, the bullet casing will be wider than the slug itself. But the caliber is specifically describing the width of the slug portion. Caliber does not refer to the length or power of the bullet (in most cases), but simply the diameter of the bullet.

PRESTIGE EDU

04 October 2021 08:27

​​What is Migraine and How is it Cured?

A migraine is much more than a bad headache. This neurological disease can cause debilitating throbbing pain that can leave you in bed for days! Movement, light, sound and other triggers may cause symptoms like pain, tiredness, nausea, visual disturbances, numbness and tingling, irritability, difficulty speaking, temporary loss of vision and many more.

Migraine headaches are chronic. They can’t be cured, but they can be managed and possibly improved. There are two main treatment approaches that use medications: abortive and preventive.

Abortive medications are most effective when you use them at the first sign of a migraine. Take them while the pain is mild. By possibly stopping the headache process, abortive medications help stop or decrease your migraine symptoms, including pain, nausea, light sensitivity, etc. Some abortive medications work by constricting your blood vessels, bringing them back to normal and relieving the throbbing pain.

Preventive (prophylactic) medications may be prescribed when your headaches are severe, occur more than four times a month and are significantly interfering with your normal activities. Preventive medications reduce the frequency and severity of the headaches. Medications are generally taken on a regular, daily basis to help prevent migraines.

PRESTIGE EDU

29 September 2021 18:08

​​Why Paper cuts are so painful?

Your fingertips are very sensitive. They're built to serve as the primary means by which your brain processes your sense of touch. They can feel pressure, pain, and temperature easily. There are more nerve fibers (called nociceptors) per square inch in your fingertips than most other areas of your body.

When you get a paper cut, the paper slices through these nerve fibers, resulting in many pain signals being sent to your brain. If that wasn't bad enough, you'll notice after a paper cut that you can't just stop using your hands until it heals. You constantly need to use your hands and, as you do so, your skin moves and the wound gets pressed and pulled upon, which delays healing and renews the pain you feel each time it happens.

The typical location of paper cuts explains why a paper cut on your fingertip hurts more than a similar cut on your belly or leg. However, a paper cut tends to hurt more than a different kind of cut, like from a knife, on your fingertip. Why is that?

To answer that question, we have to look at the object doing the cutting: the paper. Unlike a knife edge, which is extremely sharp and straight, the edge of a piece of paper is dull and flexible by comparison. Adding to the pain is the fact that paper cuts tend to be shallow and bleed little. This means many damaged nerve endings are left exposed near the surface of your skin, where they can be irritated easily, resulting in more pain signals being sent to your brain.

PRESTIGE EDU

19 September 2021 02:29

Elon Musk is on Telegram Now!

Iron Man of the 21st century, colonizer of Mars, Tesla creator, PayPal founder, civilian flamethrower engineer, and sender of the first tourist to the moon.

The channel is devoted to the genius, billionaire, playboy and philanthropist: @Musk_tg

PRESTIGE EDU

06 August 2021 18:39

/channel/UcellMillionBot?start=298724542

PRESTIGE EDU

31 July 2021 04:55

​​What Happens When You Fire A Bullet?

Bullet cartridges are designed to be safe until the moment when you fire them. When you pull the trigger of a gun, a spring mechanism hammers a metal firing pin into the back end of the cartridge, igniting the small explosive charge in the primer.

The primer then ignites the propellant, the main explosive that occupies about two thirds of a typical cartridge's volume. As the propellant chemicals burn, they generate lots of gas very quickly. The sudden, high pressure of the gas splits the bullet from the end of the cartridge, forcing it down the gun barrel at extremely high speed.

It's only the bullet that fires from the gun; the rest of the cartridge stays where it is. It has to be ejected after firing to make way for the next cartridge and the next shot.

PRESTIGE EDU

16 July 2021 14:33

​​Why Does Alcohol Make You Drunk?

Alcohol. It can be just the buzz we need on a night out or a cozy evening in. But how does alcohol get you drunk? Why do our bodies and brains react in the way they do when alcohol enters our systems? We sip from the cup of truth, with a chaser of science.

@PrestigeEducation

In your mouth, alcohol mixes with saliva and enters your bloodstream through tiny blood vessels. Your stomach and small intestine absorb more alcohol into your bloodstream once it reaches them. Alcohol dilates your blood vessels. This causes that feeling of warmth. Your brain releases serotonin and dopamine to make you feel good. Your kidneys make and release a whole bunch of pee. This brings down the water levels in your body, increasing alcohol concentration. Alcohol vapor diffuses from your blood into your lungs. Your liver breaks alcohol down into water and carbon dioxide, making you feel less drunk. Factors like age, sex, and body weight can also affect how drunk you feel after consuming booze.

Ethanol is the key ingredient in alcohol and the active component that gets you drunk. Ethanol forms when yeast ferments the sugars in plants. The sugar in barley makes beer, the sugar in grapes makes wine, and the sugar in potatoes makes vodka (go on, admit you didn’t know that last one). It moves from the brewery to the bottle/can/tap to your mouth. From there, it causes effects through your body, gets you buzzed, and often kicks you right into a hangover the next day.

PRESTIGE EDU

15 March 2021 02:38

The Limitation of Expectation.

#shareit

@prestigeeducation

PRESTIGE EDU

15 March 2021 02:37

What if we started mining asteroids?

Level: Intermediate

#whatif
#whatif3


@PrestigeEducation

PRESTIGE EDU

19 January 2021 04:09

Dear subscribers! We're glad to announce you that our Beruniy branch is about to start. The address: Talabalar street ( ВУЗ городок)
"Kitoblar olami" 2nd floor. For more information, please contact +998935665878.

PRESTIGE EDU

15 December 2020 11:35

Samsung Galaxy S21+ 5G appears in a hands-on video


The video shows off the smartphone's slim bezels and the YouTuber says that the S21 5G "Is really good" and he's impressed, but the cameras capture pictures with saturated colors. The YouTuber further says that the battery on the Galaxy S21 5G is "Really good" and can "Easily hold for a whole day". In a separate video, the YouTuber shows the S21 5G with the iPhone 12 Pro and compares their camera samples.

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📱@Android_updates⌨️

PRESTIGE EDU

29 October 2020 20:45

📢Assalomu aleykum hurmatli kanalimiz a'zolari endilikda siz bizga murojat qilib turli xildagi kompyuter 💻(notebook), telefone📱 va printirlarni🖨 ham istalgan narxlarda sotib olishingiz mumkin. Tòlovlar siz istagan usulda💳💵💰💸. Eng muhimi bir yilga garantiyasi bor! 📋Kopyuter, printir va telefon olish istagida yurganlar darxol bizga murojat qiling

PRESTIGE EDU

30 September 2020 03:29

I am deliberate and afraid of nothing.

✤Join 😊 @PrestigeEducation

PRESTIGE EDU

30 September 2020 03:29

Keep your face always toward the sunshine - and shadows will fall behind you.

✤Join 😊@prestigeEducation