High-angle view at Launch Complex 39, Kennedy Space Center, showing the Apollo 12 space vehicle on the way from the Vehicle Assembly Building to Pad A. The Saturn V stack and its mobile launch tower are atop a huge crawler-transporter. Apollo 12 is scheduled as the second lunar landing mission.

Mathematics and Logic Symbols ✍️ Quantifiers and Sets: ∀ - For all (universal quantifier) ∃ - There exists (existential quantifier) ∈ - Element of ∉ - Not element of ⊂ - Subset of ⊆ - Subset or equal ⊇ - Superset or equal ⊄ - Not a subset of ∪ - Union ∩ - Intersection ∪̸ - Not a subset ∅ - Empty set ∖ - Set difference Logical Operators: ⇒ - Implies ⇔ - If and only if (equivalence) ∧ - Logical AND ∨ - Logical OR ¬ - Negation ⊤ - True ⊥ - False ⊕ - Exclusive OR (XOR) → - Conditional implication ≡ - Equivalent Numbers and Constants: ℕ - Set of natural numbers ℤ - Set of integers ℚ - Set of rational numbers ℝ - Set of real numbers ℂ - Set of complex numbers ∞ - Infinity π - Pi e - Euler’s number Operations and Relations: ∑ - Summation ∏ - Product √ - Square root |x| - Absolute value of x Δ - Change/difference ∇ - Gradient ⊗ - Tensor product ≤ - Less than or equal to ≥ - Greater than or equal to ≠ - Not equal to ≈ - Approximately equal ∝ - Proportional to Geometric Symbols: ∡ - Angle ⊥ - Perpendicular ∥ - Parallel Reasoning and Statements: ∴ - Therefore ∵ - Because

Nikola Tesla, had all of his possessions and files confiscated by the U.S. Government after his death, what happened to them? Just before he died, Tesla appears to have been working on some form of teleforce weapon. The famous so-called "Death Ray."

It is impossible to copy, scan, or Photoshop currency on most modern equipment. Modern copiers and scanners, as well as image processing programs, can identify patterns on the notes and will cease processing the image.