DESPITE THE NAME "LEAD," THE CORE OF A PENCILISN'T ACTUALLY MADE OF LEAD. IT'S MADE...
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Narrator:
DESPITE THE NAME "LEAD," THE CORE OF A PENCIL
ISN'T ACTUALLY MADE OF LEAD. IT'S MADE PRIMARILY OF GRAPHITE, A FORM OF CARBON THAT'S VERY
ABUNDANT IN THE EARTH'S CRUST. TO PRODUCE PENCIL LEADS, THEY COMBINE GRAPHITE POWDER
WITH WATER AND CLAY. THE HIGHER THE RATIO OF CLAY,
THE HARDER THE LEAD
DESPITE THE NAME "LEAD," THE CORE OF A PENCIL
ISN'T ACTUALLY MADE OF LEAD. IT'S MADE PRIMARILY OF GRAPHITE, A FORM OF CARBON THAT'S VERY
ABUNDANT IN THE EARTH'S CRUST. TO PRODUCE PENCIL LEADS, THEY COMBINE GRAPHITE POWDER
WITH WATER AND CLAY. THE HIGHER THE RATIO OF CLAY,
THE HARDER THE LEAD
Full Transcript
00:00:01.000 --> 00:00:02.069
Narrator:
DESPITE THE NAME "LEAD,"
00:00:02.793 --> 00:00:05.586
THE CORE OF A PENCIL
ISN'T ACTUALLY MADE OF LEAD.
00:00:05.069 --> 00:00:07.759
IT'S MADE PRIMARILY OF GRAPHITE,
00:00:07.862 --> 00:00:11.552
A FORM OF CARBON THAT'S VERY
ABUNDANT IN THE EARTH'S CRUST.
00:00:11.655 --> 00:00:13.172
TO PRODUCE PENCIL LEADS,
00:00:13.276 --> 00:00:16.241
THEY COMBINE GRAPHITE POWDER
WITH WATER AND CLAY.
00:00:16.345 --> 00:00:20.000
THE HIGHER THE RATIO OF CLAY,
THE HARDER THE LEAD.
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Movie Summary
Television series that documents how various everyday products are made.
