Liquid Nitrogen and Fire!

Jefferson Lab
28 Dec 200908:23
32 Likes 10 Comments

TLDRIn a thrilling science demonstration, the presenter from Frostbite Theater engages the audience with a risky experiment involving fire and liquid nitrogen. After ensuring safety protocols, including no volunteering and a promise from the audience not to replicate the experiment at home, the presenter explores the effects of nitrogen on fire, leading to a dramatic extinguishing of the flame due to the lack of oxygen. The segment serves as a cautionary tale about the dangers of nitrogen and helium displacement in environments like tunnels, emphasizing the importance of oxygen sensors and safety measures.

  • 🎭 The script is for a science experiment show called 'Cold Cuts' hosted by Frostbite Theater.
  • πŸ”₯ The host is preparing to conduct a potentially dangerous experiment involving fire and liquid nitrogen.
  • βš–οΈ Due to the risk involved, the host cannot have a volunteer and must perform the experiment alone.
  • πŸ™Œ The audience is asked to promise not to attempt the experiment at home or anywhere else.
  • πŸšͺ Safety measures are highlighted, including the location of fire exits and the presence of a fire extinguisher.
  • πŸ₯½ The host emphasizes the importance of silence during the experiment to avoid a repeat of a previous incident.
  • πŸ” The host explains the science behind the experiment, focusing on the reaction between fire and nitrogen.
  • 🧊 Liquid nitrogen is described as being extremely cold at the surface but warming up as one moves towards the top.
  • 🌬️ The key reason for the fire going out is the lack of oxygen in the nitrogen environment.
  • πŸ’‘ The host relates the experiment to real-world safety concerns, such as the danger of helium displacing oxygen in tunnels.
  • πŸ›‘ The script concludes with a call for brave and slightly foolish audience members to participate in an unspecified activity.
Q & A
  • What is the name of the show presented by Frostbite Theater?

    -The show is called 'Cold Cuts! No baloney! Just science!'

  • Why is the speaker hesitant to perform the next experiment?

    -The speaker is hesitant because 'The Incident' previously occurred, and the upcoming experiment is considered dangerous.

  • What precaution does the speaker take due to the potential danger of the experiment?

    -The speaker does not allow a volunteer and decides to perform the experiment on their own for safety reasons.

  • What does the audience promise not to do as part of the experiment?

    -The audience promises not to try the experiment at home or at someone else's home.

  • What is the speaker's reaction when the fire goes out upon contact with nitrogen?

    -The speaker expresses disappointment, calling it a 'rip-off' and decides to repeat the experiment with a smaller amount of nitrogen.

  • Why does the fire go out when it comes into contact with liquid nitrogen?

    -The fire goes out because the liquid nitrogen boils and creates an environment with no oxygen, which is necessary for fire to continue burning.

  • What is the significance of the frost in the nitrogen container?

    -The frost indicates that the top of the container is above freezing, despite the liquid nitrogen being 321 degrees below zero at the surface.

  • How does the speaker ensure their safety during the experiment?

    -The speaker wears goggles to protect their eyebrows and face, and points the cup containing nitrogen towards the audience to direct any potential hazards away from themselves.

  • What is the potential hazard of helium in the tunnels mentioned in the script?

    -Helium, while not poisonous, can displace oxygen in the tunnels, creating an asphyxiation risk. Oxygen sensors and alarms are used to prevent this hazard.

  • What does the speaker advise the audience to do if they encounter a large bubble of helium?

    -The speaker advises the audience to run away from large bubbles of helium as they can be dangerous due to the displacement of oxygen.

  • What is the main scientific principle demonstrated in the experiment?

    -The main scientific principle demonstrated is the displacement of oxygen by gases like nitrogen and helium, which can extinguish fire and pose a risk of asphyxiation.

πŸ”₯ Dangerous Experimentation and Safety Precautions

The speaker introduces a high-risk experiment that they haven't been allowed to perform since 'The Incident.' Due to the nature of the experiment, no volunteers are needed, and the audience is made to promise not to attempt the experiment at home or elsewhere. The speaker emphasizes the importance of safety by pointing out fire exits and having a fire extinguisher ready. They also mention the risks involved, such as the possibility of being blown against a wall and the need for silence during the experiment to avoid a repeat of a previous mishap. The audience is advised to decide whether to duck or catch if someone gets thrown towards them as a result of the experiment.

🧊 Fire and Nitrogen: A Lesson in熄灭 and Safety

The speaker conducts an experiment involving fire and liquid nitrogen, highlighting the extinguishing of the fire due to a lack of oxygen rather than the cold temperature of the nitrogen. The audience is engaged in a discussion about the properties of nitrogen and its behavior when it boils, creating nitrogen gas that displaces oxygen. The speaker uses this opportunity to educate on the dangers of oxygen displacement, drawing parallels to helium in tunnels and the importance of oxygen sensors and safety measures in such environments. The segment ends with a call for brave and somewhat foolish volunteers, presumably for another part of the demonstration.

πŸ’‘Frostbite Theater
Frostbite Theater is the setting of the video, serving as a metaphorical platform for the scientific experiments being conducted. It represents a space where scientific exploration and entertainment converge, creating an atmosphere that is both educational and thrilling.
πŸ’‘Cold Cuts
Cold Cuts appears to be the name of the segment or show within Frostbite Theater that focuses on scientific experiments. It suggests a program that is concise, to the point, and possibly focused on experiments that involve low temperatures or 'cold' science.
The term 'dangerous' refers to the inherent risks involved in the scientific experiment being described. It underscores the seriousness of the situation and the potential for harm or unexpected outcomes, which is a central theme in the video as the presenter warns the audience about the experiment's risks.
An 'experiment' is a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact. In the context of the video, it is the core activity that the presenter is engaging in, involving the use of fire and liquid nitrogen, which is a potentially hazardous combination.
A 'volunteer' is a person who offers to participate in an activity or experiment, often to assist or be a subject. In this video, the presenter explicitly states that no volunteer can participate due to the dangerous nature of the experiment, which adds to the tension and seriousness of the demonstration.
πŸ’‘Liquid Nitrogen
Liquid nitrogen is a cryogenic liquid produced by distilling liquid air and boiling off the oxygen, leaving mainly nitrogen. It is used in a variety of scientific and industrial applications due to its extremely low temperature of 321 degrees below zero Fahrenheit (-196Β°C). In the video, it is a critical component of the experiment, highlighting the potential for extreme reactions when combined with fire.
Fire is a rapid chemical reaction that releases heat, light, and various reaction products. It is a fundamental concept in the study of chemistry and physics and is a key element in the experiment described in the video. The interaction between fire and liquid nitrogen is central to the demonstration, as it explores the effects of extreme temperatures on combustion.
πŸ’‘Safety Precautions
Safety precautions are measures taken to prevent harm or injury. In the context of the video, these precautions are critical as the experiment involves dangerous elements like fire and liquid nitrogen. The presenter emphasizes the importance of not attempting the experiment at home and highlights the presence of fire exits and fire extinguishers.
πŸ’‘The Incident
While 'The Incident' is not explicitly defined in the script, it is referenced as a past event that had significant consequences, leading to restrictions on the type of experiments that can be performed. It serves as a narrative device to heighten the tension and stakes of the current experiment.
Combustion is a chemical reaction that occurs between a fuel and an oxidizing agent, such as oxygen, that produces energy in the form of heat and light. In the video, the process of combustion is central to understanding the interaction between fire and liquid nitrogen, as the presenter explores how the fire behaves in an environment with limited oxygen.
Oxygen is a chemical element that is essential for most forms of life on Earth, including the human body, as it is required for cellular respiration. In the video, the lack of oxygen becomes a critical factor when discussing why the fire goes out when introduced to liquid nitrogen, as the nitrogen gas displaces the oxygen needed for combustion.
Helium is a noble gas that is inert and non-toxic, often used in various applications such as balloons and scientific research. In the video, helium is mentioned as another gas that can displace oxygen, creating a potentially dangerous situation if it accumulates in an enclosed space, such as a tunnel.

Frostbite Theater presents an engaging science experiment show called Cold Cuts.

The host expresses concern about repeating a dangerous experiment not allowed since 'The Incident'.

The audience is cautioned not to attempt the experiment at home or anywhere else.

The host demonstrates the experiment involving fire, nitrogen, and potential outcomes.

The audience participates in a vote on the expected outcome of the experiment.

Safety measures are highlighted, including fire exits and fire extinguishers.

The host humorously addresses the importance of not wearing gloves due to the risk of burning.

The necessity of silence during the experiment is emphasized for the host to concentrate and avoid a repeat of a previous mishap.

The host interacts with the audience, discussing the potential consequences of the experiment.

The experiment is conducted, and the fire goes out, leading to audience interaction and discussion.

The host explains the scientific reason behind the fire going out, focusing on the absence of oxygen.

The audience correctly identifies the lack of oxygen as the cause of the fire going out.

The host clarifies the misconception that the fire goes out due to cold temperatures.

The host provides a detailed explanation of the temperature gradient in the nitrogen container.

The host demonstrates the safety of the nitrogen container's temperature by placing his hand inside.

The host discusses the dangers of nitrogen and helium displacing oxygen in environments like tunnels.

The host calls for brave and slightly foolish volunteers to participate in the next part of the experiment.

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