This is the hope candle burning within each of, tended by the love of God, and shining on the life of the Holy Trinity. This is the life that pulls us toward itself. And as we merge our lights together to shine upon this life, we imagine this new world the poet speaks of.
The shape of a candle can greatly affect its efficiency. A tapered or conical shape allows for better air circulation, which allows the flame to burn more efficiently. On the other hand, a cylindrical shape can trap hot air and cause the flame to burn less efficiently.
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Yes, the type of wax used in a candle can impact its efficiency. Beeswax and soy wax are known to burn more efficiently than paraffin wax, which is commonly used in candles. This is because beeswax and soy wax have a lower melting point, which allows for a more consistent and steady flame.
Yes, it is possible to improve the efficiency of a candle by adding certain ingredients. For example, adding a small amount of salt to the wax can help the flame burn brighter and more efficiently. However, it is important to note that adding too much of any ingredient can be dangerous and should be done with caution.
Absolutely. The wick of a candle plays a crucial role in its efficiency. A wick that is too thin or too thick can cause the flame to burn too quickly or too slowly, resulting in an inefficient burn. It is important to choose the right wick for the type and size of candle being used.
The environment can greatly impact the efficiency of a candle flame. Wind or drafts can cause the flame to flicker and burn less efficiently. It is best to burn candles in a still environment to ensure a consistent and efficient burn. Additionally, altitude and humidity can also affect the efficiency of a candle flame.
There are a lot of fire tuts (fire in general, not candle specific), this one is pretty good and short.
Im sure if you scale things down and play with the flame rates and smoke decadency you can get a nice candle.
The heat of the flame vaporizes the liquid wax (turns it into a hot gas), and starts to break down the hydrocarbons into molecules of hydrogen and carbon. These vaporized molecules are drawn up into the flame, where they react with oxygen from the air to create heat, light, water vapor (H2O) and carbon dioxide (CO2).
It takes a few minutes when you first light a candle for this combustion process to stabilize. The flame may flicker or smoke a bit at first, but once the process is stabilized, the flame will burn cleanly and steadily in a quiet teardrop shape, giving off carbon dioxide and water vapor.
A quietly burning candle flame is a very efficient combustion machine. But if the flame gets too little or too much air or fuel, it can flicker or flare and unburned carbon particles (soot) will escape from the flame before they can fully combust.
The oxygen-rich blue zone is where the hydrocarbon molecules vaporize and start to break apart into hydrogen and carbon atoms. The hydrogen is the first to separate here and reacts with the oxygen to form water vapor. Some of the carbon burns here to form carbon dioxide.
The fourth zone of the candle (sometimes call the veil) is the faint outside blue edge that extends from the blue zone at the base of the flame and up the sides of the flame cone. It is blue because it directly meets with the oxygen of the air, and is the hottest part of the flame, typically reaching 1400o C (2552o F).
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(PhysOrg.com) -- The flickering flame of a candle has generated comparisons with the twinkling sparkle of diamonds for centuries, but new research has discovered the likeness owes more to science than the dreams of poets.
Candleflame is a godly knife that was originally obtainable by unboxing it from the Halloween Box during the 2021 Halloween Event. It is now only obtainable through trading as the event has since ended.
It has a deep purple handle in the shape of an antique candlestick with a purple blade resembling a flame of a candle igniting from it, hence the name. On the surface of the handle below the blade is a beam of radiant purple light.
So I know there is a "Wispy Smoke" shelf tool in Houdini, but it's not really what I would expect. If you've ever blown a Candle out before (and I've done this hundreds of times the past week for Lookdev, heh) you know that the smoke that briefly trails out of it is VERY thin, precise and almost made up of lines.
I have an image in my head of a few particles floating upwards from my "wick" in a sort of random, noisy direction and then using a Trail SOP to cause them to streak, hopefully looking like smoke, but... I'm not sure quite how to achieve this, or rather how to have it look like connected smoke instead of just lines streaking. Is there a way to cause 2 of the particles to "connect" and stream together, and make it look more like an opaque ribbon (or... you know, smoke...)?
You could use an add sop to connect the upwards particles as a line, duplicate, shift it one side and then mesh it together like a ribbon using a rail + skin sop. Then have xray kind of shader to help give you the look. Though this method will probably have you tweaking alot.
It could be done entirely in SOP depending on the shot, for example if a hand runs through the smoke that wouldn't work. If using DOP it will require very high resolution simulation to get the detail of the thin smoke.
It's actually just a candle that gets blown out by an unseen force, and I want to have smoke come out of the wick after the Flame (pyro) disappears. So no hand or anything interacting with the smoke really.
The ribbon method is sort of working, but isn't quite organic enough to be convincing smoke. I'm not sure how to create a gridless advection render, and from my research it looks like it takes ridiculous amounts of time to render so...
Is there another way to accomplish this in just the SOP level? It's just a basic shot of a Candle being blown out, and I'd like some realistic smoke floating up after. I've been tweaking with the "Wispy Smoke" shelf tool but it seems to be too... how do I put it... noisy?
Having designed what I humbly believe is a very good candle flame simulation class, I wonder if anyone else who has tried to mimic candles has run into the difficulty of finding a good "warm white" LED color for this use. I've gotten good results (to my eyes anyway) just using small clear (non colored) incandescent Lamps from Holiday light sets. But of course LEDs would be better for power considerations.
So... it seems to me that among the store bought LED bulbs for home lighting use, the color designated "Soft White" seems to come closest to a Candle. So I'm tempted to take one apart and see if I can separate the internal LEDs. I've done some research and found one article describing Candle light as 1900 degrees on the Kelvin scale, and an RGB combination of 255, 147, 41, respectively. 1900 is a bit lower than even "Soft White" LEDs are rated, color wise. But considering the many "electronic candles" I've seen sold who's color looks completely wrong, I don't know if I could trust that figure either.
Anyway, I figure it might be a good time to see if anyone else has discovered a GOOD "of the shelf" warm white LED that does a better job. Or, if anyone has found that rolling their own with an RGB LED, along with appropriate resistor combinations has offered better success.
Thanks for the input. This doesn't really address my questions though. I've already designed a simulation I'm satisfied with, as far as mimicking the expected variations in brightness you'd expect from a burning candle flame. But its the light source I'm looking for advice for, and I could not really see that in the video. Either the inside of the container is painted orange to look like the inside of a pumpkin, or the light source itself is much to orange to resemble the typical light from a candle. but again, the actual light source is not being shown to the camera.
Thanks again. Yeah see what I mean... even you decided to add a white LED to the group. Like I said, I have my own code simulation I'm happy with (I'll eventually post it somewhere). But right now I'm just looking to see what single LED sources are available that offer close to candle color. If I were to do as you did, combining multiple LEDs, I might as well just get one RGB LEDs and tweak the exact color I feel matches a candle with trim pots. But I was hoping some manufacturer already made such shade of white LED.
PeterPan321:
Thanks again. Yeah see what I mean... even you decided to add a white LED to the group. Like I said, I have my own code simulation I'm happy with (I'll eventually post it somewhere). But right now I'm just looking to see what single LED sources are available that offer close to candle color. If I were to do as you did, combining multiple LEDs, I might as well just get one RGB LEDs and tweak the exact color I feel matches a candle with trim pots. But I was hoping some manufacturer already made such shade of white LED.
The answer depends on which type of LED you are looking for.
The through-the-hole two-lead LED gets its color from the plastic.
The through-the-hole four-lead LED is an RGB LED. The Color is a combination of the individual Red, Blue and Green LED.
The majority of Surface-mounted LED are RGB. Whether they are inidividually addressable has to be determined.
There are more Surface-mounted LED which are WRGB. These have an actual White LED along with the Red, Blue and Green LED. 152ee80cbc
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