Usually a bubble echo is looking for an opening between the top 2 chambers in the heart. During a regular echo, which is totally noninvasive, they inject some saline with a small amount of air into an IV. That is the only invasive part of the test. They then look at the screen and see where the bubbles go. In a negative study, they all go over to the left side of the heart. In a positive study, some don't go to the left side, indicating a possible connection or small hole in the heart. It is totally painless; I have had 2 done.
Officially Dumbledore was born in 1881, making him about 115 years old when he died in 1996. There is a lot of confusion about that because prior to J.K. giving an exact date for A.P.W.B.D.'s birth, she had mentioned in an interview that he was about 150.. Many readers took her at her word.
Dumbledore, the headmaster of Hogwarts in the Harry Potter series (except in the last book, because he died in Half-Blood Prince) (spoiler alert!), is pretty much the only major character to be portrayed by different actors in the films ((the only other one is Voldemort, and thatâs if you count the face in the back of Professor Quirrellâs head)).