Stefan Boltzmans Apparatus
Product Code : EL-HTL-11089
The Stefan Boltzmann's Apparatus from Lab Exports lets students experimentally determine the Stefan-Boltzmann constant by measuring the rate of temperature rise of a blackened test disc as it receives radiant heat from a hot water-filled hemisphere.
Specifications
| Water Heating Tank | Fitted with electric immersion heater |
| Hemisphere | Copper sheet, 200 mm dia., surrounded by water jacket of 250 mm dia. |
| Test Disc | Copper, 20 mm dia., with thermocouple at centre |
| Temperature Indicator | Multichannel digital, 0-200°C, 0.1°C least count |
| Timer | Audible buzzer, rings every 5 seconds |
| Services Required | 230V, 15A AC supply with earthing; bench area 1m x 0.5m at working height |
Key Features
- Copper hemisphere surrounded by a hot water jacket provides a controlled radiant heat source
- Blackened copper test disc inserted at the centre of the hemisphere receives radiant heat
- Thermocouple at the disc centre tracks temperature rise as heat is absorbed by radiation
- Audible buzzer timer rings every 5 seconds for consistent interval readings
- High-resolution digital temperature indicator (0.1°C least count) for accurate readings
- Direct experimental determination of the Stefan-Boltzmann constant from measured data
Applications
The Stefan Boltzmann's Apparatus is used in heat transfer laboratories to experimentally verify the Stefan-Boltzmann law of radiation, helping students determine the Stefan-Boltzmann constant from the measured rate of temperature rise of a radiatively heated test disc.
Why Choose Lab Exports
Lab Exports is a trusted manufacturer and exporter of engineering lab equipment including a complete range of Heat Transfer Lab apparatus for engineering colleges and technical institutes. Every unit is built for classroom durability, measurement accuracy and long-term reliability, backed by responsive after-sales support. As a supplier of engineering college lab equipment India relies on for both domestic and export orders, Lab Exports ships this apparatus to institutions in Chad (Central Africa), Bangladesh (South Asia) and Fiji (Pacific).
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Frequently Asked Questions
Q1. What does the Stefan Boltzmann's Apparatus determine?
It determines the Stefan-Boltzmann constant by measuring the rate of temperature rise of a blackened test disc heated by radiation from a hot hemisphere.
Q2. How is the hemisphere heated?
The copper hemisphere is surrounded by a water jacket, heated by an electric immersion heater in the water heating tank.
Q3. How is the disc temperature measured?
A thermocouple at the centre of the copper test disc feeds a multichannel digital temperature indicator with 0.1°C resolution.
Q4. How are readings timed?
An audible buzzer timer rings every 5 seconds to prompt consistent interval temperature readings.
Q5. What utilities are required to operate the apparatus?
It requires a 230V, 15A AC supply with earthing connection and a bench area of approximately 1m x 0.5m.
Request a Quote
For pricing, specifications or export documentation on the Stefan Boltzmann's Apparatus, contact Lab Exports for a detailed quotation.