SIGNIFICANCE OF TEMPLE BELLS

The ringing of the bell produces what is regarded as an auspicious sound. It produces the sound Om, the universal name of the Lord. There should be auspiciousness within and without, to gain the vision of the Lord who is all-auspiciousness.
Even while doing the ritualistic aarati, we ring the bell. It is sometimes accompanied by the auspicious sounds of the conch and other musical instruments. An added significance of ringing the bell, conch and other instruments is that they help drowned any inauspicious or irrelevant noises and comments that might disturb or distract the worshippers in their devotional ardour, concentration and inner peace.
As we start the daily ritualistic worship (pooja) we ring the bell, chanting:

Aagamaarthamtu devaanaam

gamanaarthamtu rakshasaam

Kurve ghantaaravam tatra

devataahvaahna lakshanam

Translation: I ring this bell indicating the invocation of divinity, So that virtuous and noble forces enter (my home and heart); and the demonic and evil forces from within and without, depart.

Scientifically speaking a Temple bell is not just your ordinary metal. It is made of various metals including cadmium, lead, copper, zinc, nickel, chromium and. manganese. The proportion at which each one of them mixed is real science behind a bell. Each of these bells is made to produce such a distinct sound that it can create unity of your left and right brain. The moment you ring that bell, bell produces sharp but lasting sound which lasts for minimum of seven seconds in echo mode good enough to touch your seven healing centers or CHAKRAS in your body.

The moment bell sound happens your brain is emptied of all thoughts. Invariably you will enter state of Tran’s state where you are very receptive. This Trans state is the one with awareness. You are so occupied in mind that only way to awaken you is with a Shock! And the Bell works as Anti-dote to your mind.  

HACHIKO - A STORY OF LOYALTY

In 1924, Hidesaburō Ueno, a professor in the agriculture department at the University of Tokyo took in Hachikō as a pet. During his owner's life Hachikō greeted him at the end of the day at the nearby Shibuya Station. The pair continued their daily routine until May 1925, when Professor Ueno did not return. He had suffered from a cerebral hemorrhage and died, never returning to the train station where Hachikō was waiting. Every day for the next nine years the golden brown Akita waited at Shibuya station.

Hachikō was given away after his master's death, but he routinely escaped, returning again and again to his old home. Eventually, Hachikō apparently realized that Professor Ueno no longer lived at the house. So he went to look for his master at the train station where he had accompanied him so many times before. Each day, Hachikō waited for the return of his owner.

The permanent fixture at the train station that was Hachikō attracted the attention of other commuters. Many of the people who frequented the Shibuya train station had seen Hachikō and Professor Ueno together each day. They brought Hachikō treats and food to nourish him during his wait.

This continued for nine years with Hachikō appearing precisely when the train was due at the station.

Years later, one of professor Ueno’s former students heard about Hachiko’s constant vigil. He wrote about it, and the story quickly became a national sensation. People used the story as a symbol of the kind of loyalty they were trying to promote.

Eventually, Hachiko’s popularity grew to the point that a bronze statue was carved in his honour. He was even present at the unveiling in April 1934. It was melted down to aid in the war effort during World War II. But even this couldn’t diminish his fame. After the war, people petitioned for–and were granted–a new statue in Hachiko’s honour.

Hachiko died in 1935. But even today, over 75 years later, it’s no surpise that people choose to meet by the statue of the dog who would always be waiting for his master.  

Each year on April 8, Hachikō's devotion is honored with a solemn ceremony of remembrance at Tokyo's Shibuya railroad station. Hundreds of dog lovers often turn out to honor his memory and loyalty. 

Sources:

http://en.wikipedia.org/wiki/Hachik%C5%8D