Cute Animals ♥

Kelston Boys’ High School perform a massive haka in honour of the new Maori carving on campus

The “Squidworm” is believed to be a transitional organism from benthic worms to free-swimming pelagic worms.  They are named Squidworms due to their tentacle-like branchiae and palps.

(source)

Leap Day…Why Does It Exist?

Once every four years, an extra calendar day is added: a leap day. But why?

The reason for adding leap days to the calendar is to align the calendar year with the actual year – which is defined by the time it takes Earth to circle the sun. It is equal to 365 days, 5 hours, 48 minutes and 46 seconds, or 365.24219 days.

If all calendar years contained exactly 365 days, they would drift from the actual year by about 1 day every 4 years. Eventually, July would occur during the northern hemisphere winter! Wouldn’t that be weird?

To correct (approximately), we add 1 day every 4 years…resulting in a leap year.

By making most years 365 days but every fourth year 366 days, the calendar year and the actual year remain more nearly in step.

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I FOUND IT GUYS I SPENT HALF AN HOUR LOOKING FOR THIS VIDEO AND ITS HERE

In 2015, a 777-200 made the Newyork-London route in 5 hours,16 minutes where the usual journey time is ~7 hours.

The flight reached ground speeds of up to 1200 km/h (745 mph),riding a powerful jet stream of up to 322 km/h (200 mph) tailwinds and breaking the sonic barrier ( 1224 km/h (761 mph)).

Tail and headwinds

The principle is analogous to those high school problems in relative velocity:

“A man rows a boat in a river. The velocity of the boat is … Find the stream velocity”

If you are headed downstream i.e in the same direction as the river stream you will reach your destination faster than if you were rowing upstream.

Similarly a tailwind is one that blows along the same direction of the aircraft increasing the net speed of the aircraft ,and headwind is one that blows in the opposite direction and slows the craft down.

So, does this mean that if you are moving at v kmph and there is a headwind of -v kmph, you would just hover? Hell yeah!

Take a look at this video:

Wind shear

A phenomenon known as ‘wind shear’ occurs when the wind speed changes abruptly, which can cause turbulence and rapid increase/decrease in velocity of flight.

This can be really challenging during landing since if the headwind turns tailwind, there is a possibility of the aircraft overshooting the runway due to the increased velocity.

What causes this ?

The aviation industry takes advantage of trade winds and jet streams in order to cut time off the flight and save fuel.

Tradewinds are caused by the unequal heating of the atmosphere at different latitudes and altitudes and by the effects of the Earth’s rotation (Coriolis effect).

                           Trade wind pattern. Credit: Earth Wind Map

Jet streams on the other hand are this narrow current of fast moving winds in the upper troposphere flowing west to east. And riding one can definitely make your travel time shorter.

                               Jet streams in the northern hemisphere

As a result of jet streams, within North America  the time needed to fly east across the continent can be decreased by about 30 minutes if an airplane can fly with the jet stream, or increased by more than that amount if it must fly west against it.

How do pilots know about this ?

Pilots receive a weather briefing actively during flight. Included in the briefing is the best combination of jetstreams and other wind patterns that the pilot can take advantage of saving time and fuel.

Many airports have runways facing in different directions in order to allow the pilots to use the runway that faces the wind during take off/landing.

Have a great day!

Study tips

Be active while studying :

Do not mindelssly skip through your notes.Make sure you are fully understanding the material that you are working on. Ask yourself questions. If you can answer them , that’s cool, if you can’t, note them down on a post-it and ask your teacher or classmates or maybe google it. If you can’t focus take a break and come back later.

Set the mood for studying:

Wash you face and hands with cold water, or take a shower. Put on comfy clothes. Organize your study space and clean it up. Get yourself a snack and a cup of coffee or tea or just plain water, whatever works for you. Set the stuff you need for studying and get rid of anything else. If you don’t need your phone for studying, turn the wi-fi off and put it away from you. Start a study playlist if you want. Put your to do list right in front you and get to it.

Make a TO DO list:

Grab a white sheet of paper. Brain dump all the tasks you have to do for the day, prioritize them, and write them again in a clean way, while dismissing the unimportant tasks if you don’t have enough time.

Take breaks when you need them :

If you take too much you’ll lose focus, if you don’t take enough, your studying won’t be effective. If you can’t get yourself to study, set a timer for 30 min, take a 10 min break and work to add to the length of the studying each time.

Eat the frog :

Start with the boring and hardest tasks first. You’ll be more motivated to get work done after you get them out of the way.

Break up big goals to shorter clear tasks :

Don’t write for example ’ study maths ’ as a task, instead note exactly how you’re planning to do it, for instance ’ work 10 exercices from a certain book’ . It feels easier to get work done when it’s not just a vague goal.

Start homework as soon as you get. If you are busy, schedule a time block for doing it asap.

Break big projects to smaller tasks and schedule them on your planner.

You’ll more likely do them if you see them in your planner, then if it’s just an unclear deadline freaking you out and that you don’t know how to start.

Go to your classes and pay attention to your teachers:

Be ACTIVE. Ask questions, participate in class, it’s really helpful . Take your own notes, in your own way and don’t do just mindlessly note everything your teacher says. Pick just the important stuff or those that aren’t in the text book. Draw mind maps, lists, diagrams, use colors and leave space and margins.

When reviewing your notes, make them easier to understand by adding remarks from other sources in the margings.

I don’t know if it’s clear enough. But while reviewing my notes I like to use a pencil and try to make my notes easier to grasp, for example, write down a general way to solve all the problems that are similar to one that you have seen in class.

Study EVERYDAY:

Make studying a daily task. Don’t wait until the night before the test. Stay up to date with your classes.

Prepare your classes ahead of time time:

Read the text book. Google it. Watch YouTube videos. Take some notes and write questions for all the things you didn’t understand to ask in class. This way you won’t be overwhelmed in class and manage to not fall behind and make the most out if it.

Practice practice practice problems :

Work as much exercices as you can, and all the previous exams that you get your hands on. That way you know what the professor usually test the students on, and also you get used to working with your lessons, especially for maths and physics and such subjects.

Map of US National Parks

The amazing history of Pi. 

Beautifully designs from Circle.

Beautifully designs of Spirograph are the gifts that I want to send to Pi on Pi’s Day. They are created from circles, with geometric drawing tools - Spirograph.

Pi’s Family: 10,000 Digits Of Pi.

3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930381964428810975665933446128475648233786783165271201909145648566923460348610454326648213393607260249141273724587006606315588174881520920962829254091715364367892590360011330530548820466521384146951941511609… and more. These are the first 1,000,000 are listed here.

Happy Pi Day to you, Happy Pi Day to you, Happy Pi Day, Three Point One Four. Happy Pi Day to you. HAPPY PI DAY! :)……….

3/14/15.

Want her waist