science

NAND
   _____
--|     |
  |  &  |O-
--|_____|

=[ & ]o-

NOR
   _____
--|     |
  | >=1 |O-
--|_____|

=[ >=1 ]o-

etc

 Resistors:

 --/\/\/\/\--

   |    |
    >   \
   <    /
    >   \
   |    |
  __________________________________________________________________________
Flasks and Test Tubes
  __________________________________________________________________________

   _
  | |
  / \
 /   \
(_____)

                       .---.
                      _\___/_
                       )\_/(
                      /     \
                     /       \
                    /         \
                   /~~~~~~~~~~~\
             jgs  /             \
                 (               )
                  `-------------'
    ______
   (______)
    |    |
    |    |
    |    |
    |    |             __.--------.,__
    |    |             \ `--------'|_ \
    |`--'|              \       ===| | |
    |    |               |      ===| | |
    |    |               |._____===|_| |
    |    |               |      ===|__/
    |    |          jgs  |      ===|
    |    |               `---------'
    |    |
jgs |    |
    `.__.'
  __________________________________________________________________________
Periodic Table of Elements
  __________________________________________________________________________

   1A   2A                                         3A  4A  5A  6A  7A  8A
  -----                                                               -----
1 | H |                                                               |He |
  |---+----                                       --------------------+---|
2 |Li |Be |                                       | B | C | N | O | F |Ne |
  |---+---|                                       |---+---+---+---+---+---|
3 |Na |Mg |3B  4B  5B  6B  7B |    8B     |1B  2B |Al |Si | P | S |Cl |Ar |
  |---+---+---------------------------------------+---+---+---+---+---+---|
4 | K |Ca |Sc |Ti | V |Cr |Mn |Fe |Co |Ni |Cu |Zn |Ga |Ge |As |Se |Br |Kr |
  |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---|
5 |Rb |Sr | Y |Zr |Nb |Mo |Tc |Ru |Rh |Pd |Ag |Cd |In |Sn |Sb |Te | I |Xe |
  |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---|
6 |Cs |Ba |LAN|Hf |Ta | W |Re |Os |Ir |Pt |Au |Hg |Tl |Pb |Bi |Po |At |Rn |
  |---+---+---+------------------------------------------------------------
7 |Fr |Ra |ACT|
  ===--------------------------------------------------------------------===
   Lanthanide |La |Ce |Pr |Nd |Pm |Sm |Eu |Gd |Tb |Dy |Ho |Er |Tm |Yb |Lu |
              |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---|
   Actinide   |Ac |Th |Pa | U |Np |Pu |Am |Cm |Bk |Cf |Es |Fm |Md |No |Lw |
              -------------------------------------------------------------
  __________________________________________________________________________
Helix
  __________________________________________________________________________

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// \\          // \\  // \\          // \\  // \\          // \\  // \\
\\   \\      // | :,\\': | \\      // | :,\\': | \\      // | :,\\': | \\
 \\  | |\\  //  | | // \\  | |\\  //  | |//  \\  | \\  // | | //  \\ | |
  \\ | :,\\': | //      \\ | :,\\': | //      \\ | :,\\': | //      \\ |
    \\ //  \\ //          \\ //  \\ //          \\ //  \\ //          \\
  __________________________________________________________________________
Microscope
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     __
     ||
    ====
    |  |__
    |  |-.\
    |__|  \\
     ||   ||
   ======__|
  ________||__
 /____________\
  __________________________________________________________________________
Projectors
  __________________________________________________________________________

                       |
       _ .....-----~~~~|
      /_|              |
     ||  '''''-----....|
     ||____            |
     |Kev  |           |
     |_____|