Can you light a flare underwater?

Asked by: Jessica Jenkins

Is it technically possible to start a fire underwater? As long as there is a fuel and an oxidizer, enough heat to ignite them, and they produce enough heat to keep a flame going, it is possible to have a flame underwater.

Can flares work underwater?

So the flare is nice and hot and now it's time to see how it does underwater. But I don't think it's gonna burn underwater for very. Long. Now these flares are made of strontium nitrate sulfur.

How long will a flare burn underwater?

Handheld flares must burn for at least 1 minute at an average luminosity of 15,000 candelas, while aerial flares must burn for at least 40 seconds with 30,000-candela average luminosity.

Do flares stay lit underwater?

The oxidizer is the oxygen in the surrounding atmosphere. These two ingredients can sustain a candle flame. In the case of an underwater torch, both the combustible substance and the oxidizer must be supplied by hoses leading down to the torch, since no free oxygen is available underwater.

Is it possible for fire to burn underwater?

With careful application, a sustained fire can be created even underwater. Plasma cutting is a procedure for underwater burning in Baltimore that cuts electrically conductive materials.

Can you shoot a flare gun underwater?

And as far as the flare gun goes no damage I thought the combustion from that explosion inside the water will mess up the barrel but nothing happened. It did not affect the barrel. On this flare gun.

What’s inside a flare?

The main ingredients of flares include strontium nitrate (which provides the color—it burns with a bright red or orange-red flame), potassium perchlorate (a powerful oxidizer, which makes the strontium burn rapidly), and magnesium (which burns very brightly).

Would a flare work in space?

Fires can’t burn in the oxygen-free vacuum of space, but guns can shoot. Modern ammunition contains its own oxidizer, a chemical that will trigger the explosion of gunpowder, and thus the firing of a bullet, wherever you are in the universe. No atmospheric oxygen required.

Can flares burn on the moon?

Sure, a signal flare will burn on the moon, but you have to make a special one. The flare has to have both the material that burns (usually magnesium, which burns very brightly), and oxygen. There are signal flares that burn underwater — one was recently used very visibly for the 2004 Olympic Torch.

What metal burns underwater?

and a blowtorch, it yields a molten metal so hot it keeps burning underwater. The red powder in question is thermite, a mixture of finely powdered rust and aluminum that burns at a temperature of over 4,000 degrees Fahrenheit.

How is an ocean fire possible?

The ocean-surface fire was caused by a ruptured underwater pipeline, according to the state oil company Pemex.

How hot is Greek fire?

1,830 °F

The experiment used crude oil mixed with wood resins, and achieved a flame temperature of over 1,000 °C (1,830 °F) and an effective range of up to 15 meters (49 ft).

Can there be fire in space?

Fires can’t start in space itself because there is no oxygen – or indeed anything else – in a vacuum. Yet inside the confines of spacecraft, and freed from gravity, flames behave in strange and beautiful ways. They burn at cooler temperatures, in unfamiliar shapes and are powered by unusual chemistry.

Do astronauts menstruate in space?

Turns out menstruating in space is not much different than it is on Earth. Women have been living and working in space for decades now, and with no issues. But here’s the problem: all available data on periods in space pertain to short-duration missions.

What does space smell like?

Astronaut Thomas Jones said it “carries a distinct odor of ozone, a faint acrid smell…a little like gunpowder, sulfurous.” Tony Antonelli, another space-walker, said space “definitely has a smell that’s different than anything else.” A gentleman named Don Pettit was a bit more verbose on the topic: “Each time, when I …

Is there noise in space?

No, you cannot hear any sounds in near-empty regions of space. Sound travels through the vibration of atoms and molecules in a medium (such as air or water). In space, where there is no air, sound has no way to travel.

How cold is space?

According to data from the Cosmic Background Explorer (COBE) satellite, the temperature of space is 2.725K (2.725 degrees above absolute zero).

How loud is a black hole?

Converting the energy of 1,100 decibels to mass yields 1.113×1080 kg, meaning that the radius of the resulting black hole’s event horizon would exceed the diameter of the known universe. Voila!

What is the quietest thing in the universe?

Microsoft currently holds the world record for the quietest place on Earth at -20dBA. Almost no part of the world is left untouched by sound. In fact, the only place in the universe with absolutely no sound is where there is absolutely no mass– which can only be found in a perfect vacuum.

Is it possible to have 0 decibels?

What is sound? Humans can hear sounds between 0 and 140 decibels. 0 decibel does not mean that there is no sound, merely that we cannot hear it. 0 decibel is the so-called hearing threshold for the human ear.

Can you visit the quietest room on Earth?

The Orfield Laboratories, once dubbed “the quietest place on earth” (see below), is now open to the public and has become a tourist hot spot.

Can silence make you crazy?

Sometimes, you need a little peace and quiet to stay sane. But it turns out too much quiet can drive you crazy– or at least make you hallucinate. That’s what scientists at Orfield Labs in Minneapolis have found by studying how subjects react in their anechoic chamber, also known as the world’s quietest room.

What is the ringing you hear in silence?

Defining Tinnitus



Tinnitus is often defined as hearing sounds that are not being caused by external sources. For instance, if you hear a buzzing noise despite being in a quiet room on your own, then it can be classed as tinnitus.

What is the noise we hear in silence?

The brain creates noise to fill the silence, and we hear this as tinnitus. Perhaps only someone with profound deafness can achieve this level of silence, so paradoxically loud.

Why do you hallucinate in a quiet room?

Any sounds below the threshold of 0 dBA is undetectable by the human ear. And at such a low decibal level, the environment becomes so disconcerting that people have actually started to hallucinate. “When it’s quiet, ears will adapt. The quieter the room, the more things you hear.

Why do I hear faint music at night?

Musical hallucinations usually occur in older people. Several conditions are possible causes or predisposing factors, including hearing impairment, brain damage, epilepsy, intoxications and psychiatric disorders such as depression, schizophrenia and obsessive-compulsive disorder.

How long has someone stayed in the world’s quietest room?

According to the video, the world record for the longest time spent in the room is 41 minutes, and YouTuber Ryan Trahan tries to beat that.