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661

PJ Games / Re: True or False

« on: June 28, 2015, 01:58:05 PM »

True

I like European girls

662

PJ Games / Re: True or False

« on: June 28, 2015, 01:49:35 PM »

True

I m boring

663

Gup Shup / Re: Hearttouching story

« on: June 28, 2015, 12:34:46 PM »

Jehre eda krde ne ohna naal v eda hi hona

664

Fun Time / Re: PJ te kinnu dekhan nu jii karda tuhada ???

« on: June 28, 2015, 12:31:44 PM »

JLO nu :blush:

665

PJ Games / Re: True or False

« on: June 28, 2015, 12:29:05 PM »

True

A girl proposed me yesterday

666

PJ Games / Re: Give a vegetable/Fruit name to the above person

« on: June 28, 2015, 12:27:05 PM »

Orange

667

PJ Games / Re: Name A City In punjab?

« on: June 28, 2015, 12:25:25 PM »

Ferozpur

668

PJ Games / Re: Name A City In punjab?

« on: June 28, 2015, 10:09:50 AM »

Moga

669

PJ Games / Re: Write the person above you a false email address...

« on: June 28, 2015, 10:07:53 AM »

searchof_ranjha@stylo.com

670

Religion, Faith, Spirituality / Sakhis - The Sikh Stories

« on: June 28, 2015, 09:15:56 AM »

The stories of one's ancestors make the children good children. They accept what is pleasing to the Will of the True Guru, and act accordingly. ( Guru Granth Sahib Ji - 951) Bhali Karre kartaar !!!!!

...
Sakhi Series - 1 ( SEWA)

It was during the time of Guru Arjan Dev Jee. Sangat was coming from Kabul (Afghanistan) to Amritsar for darshan of Gurujee. They met a Sikh and his wife on their way. This Sikh did a lot of sewa of the sangat. He massaged their legs, waved fan over them as they rested, brought water for them, everything. The next day they proceeded with this Sikh to Amritsar. As they reached Darbar Sahib, the jathedar of that Kabul sangat asked a few boys to take care of the shoes of everyone. None of the boys was ready to do it, as they all were very much eager to be the first ones to have darshan of Gurujee. At last this Sikh came forward and said I shall do it. The sangat went inside and waited for 30-45 minutes, but Gurujee didn't show up. Then the jathedar went ahead and asked Baba Buddha Jee where Gurujee was.
Babajee : Gurujee has gone to see the sangat coming from Kabul. Jathedar : But we are the sangat from Kabul! Babajee : Didn't you meet Gurujee?
Jathedar : No Babajee, we didn't. But we met a Sikh and his wife and they did a lot of sewa.
Babajee : Where is that Sikh now?
Jathedar : We left him to look after the shoes of the sangat. Babajee, followed by the jathedar, followed by the entire sangat went outside to look for that Sikh. They saw him cleaning all the shoes with his own chola. It was none other than Guru Arjan Dev Jee Himself Baba Buddha Jee went forward and took away the pair of shoes Gurujee was cleaning. Babajee said "Why are you doing this?". The entire sangat was now in tears. Gurujee smiled and said "Babajee, I haven't seen Guru Nanak Dev Jee, but you have. Take a look again at this pair of shoes". Babajee took a good look at the pair of shoes, and since he had been with Guru Nanak Dev Jee, he immediately recognized that it was Guru Nanak Dev Jee's pair of shoes. Moral of the sakhi : When doing sewa at the Gurdwara, do it with this thought in mind that who knows who is visiting the Gurdwara today! Who knows which Gurmukh soul has come today! If you are cleaning a small kid's shoes, have in mind that it could belong to one of the Sahibzaade. If you are cleaning a bibi's shoes, have in mind that it could belong to Bibi Bhani. If you are cleaning a bhai ji's shoes, have in mind that it could belong to Bhai Bailo

671

Knowledge / Engineering World ( how stuffs works)

« on: June 28, 2015, 09:03:55 AM »

A JET ENGINE
A jet engine is a machine for turning fuel into thrust (forward motion). The thrust is produced by action and reaction—a piece of physics also known as Newton's third law of motion. The force (action) of the exhaust gases pushing backward produces an equal and opposite force (reaction) called thrust that powers the vehicle forward. Exactly the same principle pushes a skateboard forward when you kick backward with your foot. In a jet engine, it's the exhaust gas that provides the "kick". Let's have a look inside the engine...

How a jet engine works

1. For a jet going slower than the speed of sound, the engine is moving through the air at about 1000 km/h (600 mph). We can think of the engine as being stationary and the cold air moving toward it at this speed.

2. A fan at the front sucks the cold air into the engine.

3. A second fan called a compressor squeezes the air (increases its pressure) by about eight times. This slows the air down by about 60 percent and it's speed is now about 400 km/h (240 mph).

4. Kerosene (liquid fuel) is squirted into the engine from a fuel tank in the plane's wing.

5. In the combustion chamber,just behind the compressor, the kerosene mixes with the compressed air and burns fiercely, giving off hot exhaust gases. The burning mixture reaches a temperature of around 900°C (1650°F).

6. The exhaust gases rush past a set of turbine blades, spinning them like a win turbine blades are connected to a long axle that runs the length of the engine. The compressor and the fan are also connected to this axle. So, as the turbine blads spin, they also turn the compressor and the fan.

8. The hot exhaust gases exit the engine through a tapering exhaust nozzle. The tapering design helps to accelerate the gases to a speed of over 2100 km/h (1300 mph). So the hot air leaving the engine at the back is traveling over twice the speed of the cold air entering it at the front—and that's what powers the plane. Military jets often have an after burner that squirts fuel into the exhaust jet to produce extra thrust. The backward-moving exhaust gases power the jet forward. Because the plane is much bigger and heavier than the exhaust gases it produces, the exhaust gases have to zoom backward much faster than the plane's own speed.