[Smiling, he takes his glasses off and sets them on the ground.] Just watch.
What we're doing is drawing out a circle with the chalk, that's all. What it will do is protect anything inside it from magical energies, but you have to believe in it for that to be true.
[He performs the actions as he narrates, to save on time. Once the ring of chalk is in place, he leans back once more and pulls a penknife from his pocket.]
Magic being magic, however, you have to give something of yours to make it work. In this case, it's just a drop of blood.
[He pricks his finger with the sharp tip of the blade and lets a drop fall onto the line exactly as he saw Harry do in his apartment on that night a month or so back.]
So long as nothing comes by to physically disturb the circle, anything inside of it will be safe.
[Action at 46]
What we're doing is drawing out a circle with the chalk, that's all. What it will do is protect anything inside it from magical energies, but you have to believe in it for that to be true.
[He performs the actions as he narrates, to save on time. Once the ring of chalk is in place, he leans back once more and pulls a penknife from his pocket.]
Magic being magic, however, you have to give something of yours to make it work. In this case, it's just a drop of blood.
[He pricks his finger with the sharp tip of the blade and lets a drop fall onto the line exactly as he saw Harry do in his apartment on that night a month or so back.]
So long as nothing comes by to physically disturb the circle, anything inside of it will be safe.