Heat lightning, also known as silent lightning, summer lightning, or dry lightning (not to be confused with dry thunderstorms, which are also often called dry lightning), is a misnomer used for the faint flashes of lightning on the horizon or other clouds from distant thunderstorms that do not appear to have …

No, it is not possible to have thunder without lightning. However, it is possible that you might see lightning and not hear the thunder because it was too far away. Sometimes this is called “heat lightning” because it occurs most often in the summer. Is lightning always produced by a thunderstorm?

For the first time, scientists have “seen” thunder, visually capturing the sound lightning creates, including how sound radiates along the length of a lightning bolt. These first images of thunder allow us to see what we hear, he said. …

If you’re on the ground during a thunderstorm, you might witness a spectacular show of lightning. But if you’re observing that same thunderstorm from the vantage point of the International Space Station, you might see a bolt of energy shooting up from the clouds.

The sound of thunder rarely travels more than 10 miles. An observer may see nearby lightning, but the sound from the discharge is refracted over their head by a change in the temperature, and therefore the density, of the air around him. As a result, the lightning discharge seems to be silent.

You can make fire burn with a pure white flame. White is an elusive fire color because the fuel that supports a flame burns with its own characteristic spectrum. But, with a little chemistry know-how, you can get white fire. Here’s how to do it, along with tips to make the fire last.

When temperatures approach 2,400º F to 2,700º F, flames appear white. You can see these differences for yourself by observing a candle flame or a piece of burning wood. The color blue indicates a temperature even hotter than white. Blue flames usually appear at a temperature between 2,600º F and 3,000º F.

Purple flames come from metal salts, such as potassium and rubidium. Purple is unusual because it’s not a color of the spectrum. Purple and magenta result from a mixture of blue light and red light. For this project, the fire color comes from the emission spectra of safe chemicals.

Which type of fire is hotter, blue or purple? – Quora. As things heat up and combustion becomes more complete, flames turn from red to orange, yellow and blue. And purple color is combination of red & blue color it means that blue fire is more hotter than purple fire.

Flame colorants

Blue Flame Means Complete Combustion With complete combustion, an LPG (Propane) flame burns at a temperature of around 1,980°C. For Natural Gas (Methane), the temperature is about 1,960°C, according to the flame color temperature chart.

Green fire is one of the most vibrant forms of colored flames. It’s also one of the easiest to produce with common materials!

Potassium salts produce a characteristic purple or violet color in a flame.

A green flame, for instance, indicates the presence of copper. As copper heats up, it absorbs energy that’s manifested in the form of a green flame. And burning strontium chloride will create a red flame.

As the salt burns, the extra energy is lost — as light. The color of that light depends on the amount of energy being released. Lithium salts burn a bright red. Calcium glows orange.

The blue in wood flames comes from carbon and hydrogen, which emit in the blue and violet. Copper compounds make green or blue, lithium makes red.