Black T-shirt with Nikola Tesla's 1897 flat spiral coil transformer patent drawing printed in amber, front view

The Flat Spiral — N. Tesla, 1897

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$36.00
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Black T-shirt with Nikola Tesla's 1897 flat spiral coil transformer patent drawing printed in amber, front view

The Flat Spiral — N. Tesla, 1897

$36.00
Size

Free US shipping. Most orders arrive in 5 to 10 business days.

  • Printed to order, for youEach shirt is printed after you order it, so nothing sits in a warehouse and nothing is wasted.
  • Misprints replaced freeIf it arrives misprinted or damaged, send a photo within 30 days and we will replace it or refund you.
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Size and fit

Unisex fit, true to size. Measurements are laid flat, in inches, from the Bella + Canvas 3001 size chart and can vary by about an inch.

SizeChest widthLength
S1828
M2029
L2230
XL2431
2XL2632
3XL2833
4XL3034

Between sizes? Size up for a more relaxed fit.

XVI — The Tower · Drop 1

To reach the enormous voltages his wireless dreams demanded, Tesla needed a better coil. In this transformer patent he winds the coil as a flat spiral, a shape meant to reach very high voltages while keeping the windings safely insulated from each other. It's the heart of the machinery behind everything else in this collection.

Restored from the original U.S. patent and printed in amber on black.

U.S. Patent No. 593,138 · Granted 1897

→ Read the full story in The Archive

The shirt
• Bella + Canvas 3001, unisex fit
• 100% combed and ring-spun cotton
• Fabric weight: 4.2 oz./yd.² (142 g/m²)
• Pre-shrunk, side-seamed, shoulder-to-shoulder taping
• Printed to order, just for you

Note: the fabric is lightweight and slightly sheer under some lighting.

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