Price is Dhs. 440.00
Jolly Bulb – Metal Premium [2322]
This high‑quality Premium Metal Jolly Bulb is designed for demonstrating the relationship between the pressure and temperature of a fixed volume of gas—an essential concept in physics and thermodynamics. The apparatus consists of a palm‑sized hollow metallic sphere connected to a sensitive dual‑scale manometer, allowing students to observe pressure changes as the enclosed air is heated or cooled.
When immersed in a water bath of known temperature, the Jolly Bulb provides clear, measurable data suitable for teaching the behaviour of an ideal gas and verifying key relationships such as Gay‑Lussac’s law. The manometer features a dual scale of 0–18 psi and 0–1.25 × 10⁵ Pa, with the needle set to atmospheric pressure for accurate readings.
The metal bulb has an approximate diameter of 80mm, making it easy to handle while maintaining sufficient internal volume for observable pressure variation.
Key Features
- Palm‑sized hollow metal sphere – approx. 80mm diameter
- Integrated dual‑scale manometer:
- 0–18 psi
- 0–1.25 × 10⁵ Pa
- Manometer needle preset to atmospheric pressure
- Ideal for investigating gas laws and ideal‑gas behaviour
- Durable metal construction for long‑lasting classroom use
- Well‑suited for use in water baths at controlled temperatures
Ideal for School Science Lessons & Laboratory Use
Perfect for KS3, GCSE, and A‑Level physics, the Jolly Bulb provides a hands‑on way to investigate how gases respond to heating and cooling. It supports core curriculum topics including:
- Gas laws – demonstrating the pressure–temperature relationship
- Ideal gas behaviour and modelling real gases
- Use of manometers and pressure‑measurement apparatus
- Thermodynamics and practical investigations involving water baths
- Data collection and graphing for experimental analysis
Accurate, durable, and engaging, the Premium Metal Jolly Bulb is an essential piece of equipment for teaching the behaviour of gases in school and college laboratories.