Ohms Law and Atomizers

[zoiDman]

Funny though, I'm sure it's possible to do (maybe not with a Blu-Ray laser)

I though about using a Laser with a Longer Wavelength. But people today demand the Latest and Greatest.

That is why I went with 400 Nanometers.

 

[Oktyabr]

Thermodynamics are missing. For all of us.

In a nutshell this is spot on and is the reason why, according to the original post, that there very well CAN be a difference in the vaping experience between the two examples.

1.5 ohm coil at 3.7 volts or 2.0 ohm coil at 4.3 volts... what's the difference?

The difference is that resistance is missing from the equation. To get the same watts at different voltages means the resistance of the atty *must* be different between the two, at least when used on the same device.

There are many ways to change resistance, as previously mentioned, but it more or less boils down to resistance of the wire used, which can be varied by length or by thickness. Want a 2 ohm coil that will fit on the head of a matchstick? Use just a few wraps of relatively high gauge resistance wire around a very thin wick. Have more room to work? Using a thicker wick means more liquid wicked to the coil which means more vapor production. Use a lower gauge (lower resistance wire) to compensate for the extra length involved in wrapping a larger coil and you can still feasibly end up with 2 ohms.

Then there are thermodynamics at work at the micro level too. A thick wick wrapped with thin, rapidly heating wire will tend to vaporize the juice on the surface level very rapidly but may never get close to thoroughly heating the juice in the core of the wick. Thicker wire, while taking slightly longer to reach vaporizing temperatures, may heat the same, thick wick more evenly producing different vapor characteristics. Combine that with the capillary action of the juice replacing the juice being vaporized and we end up with a very complex thermodynamic (and hydrodynamic) system that may be extremely difficult to model accurately.

 

[Plettschner]

I though about using a Laser with a Longer Wavelength. But people today demand the Latest and Greatest.

That is why I went with 400 Nanometers.

I can't help but think something around 700nm would do a better job burning stuff.