525
No, he just used graphite (a naturally occuring drawing medium). The figure of the prince is drawn with a soft pencil and the background flowers with a hard pencil. Soft pencil makes an image darker, while a hard pencil makes an image lighter or silver.
hard
Hard Black pencil.
An HB pencil is just a No. 2 Pencil HB stands for Hard Black
very hard
Drawing pencils are labeled by hardness and softness. For example - 6H is the hardest (makes the lightest mark), then 4H is a little less hard (makes a slightly darker mark), 2H,etc. HB is in the middle The it goes 2B, 4B, 6B, etc. - the higher number in the B's, the softer it is and the darker the mark it will make.
it dries out
The graphite used in pencils is quite soft. Clay is added to the graphite to strengthen the 'lead' of the pencil. The amount of clay used changes the pencil's rating, with HB being the commonest, B2 being softer (darker marks), and H being harder (lighter marks).
The reason it is so hard to open a deceased person's hand is because they have no blood in their hand, which makes the fingers very stiff. Here's a trick you can try to simulate a hand without blood in it: Grasp a pencil firmly in your fist, then squeeze as hard as you can for 2 minutes, then remove the pencil and SLOWLY open your fist. It's hard, right? I rest my case. - jjmor08
The softer the pencil is the thicker and darker a line it will leave
hard black
what is document modification in hard ware component