Dt T-Shirts
Description: A white text-based design on a black background. The top line reads 'The secret to happiness is'. The middle line presents a mathematical equation: '(C^2ffee) dT = joy'. The bottom line states 'More Coffee!'. The text is centered and uses a sans-serif font.
Description: A stark white text on a black background reads "DON'T BE A" in large capital letters across the top. Below this, a scientific equation is displayed: a fraction with 'd-a' (the 'a' is stylized with a bar over it and a vector arrow above it) as the numerator and 'dt' as the denominator, separated by a horizontal line. The equation represents a rate of change.
Description: A detailed white line drawing of a vintage Yamaha DT 175 dual-sport motorcycle on a black background. Below the motorcycle, the text 'DT 175' is displayed in large white capital letters with a horizontal blue stripe intersecting the numbers '1' and '7'.
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Description: A monochrome graphic displaying a mathematical equation. The equation reads 'i i/dt - \Phi = - [waveform with a hat] \epsilon'. The symbols are stylized with a clean, white outline on a black background, including a waveform with a fedora-like hat placed above it and the Greek letter epsilon at the end.