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Ralph Spencer
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https://www.physicsforums.com/showthread.php?t=397828 < My own research in the past.
Have You Ever Experienced the 'Lighter' Feeling of Spent Batteries?
- Thread starter Mu naught
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SUMMARY
The discussion centers on the perception of weight difference between spent and fresh batteries, particularly alkaline batteries. Participants assert that the feeling of lighter spent batteries is primarily psychological, influenced by brand differences, rather than any actual mass loss. They emphasize that while batteries can vent gases, leading to a minor mass change, this is not significant enough to be perceived by human touch. The consensus is that the weight difference is negligible and can be attributed to the use of cheaper brands versus name brands.
PREREQUISITES- Understanding of battery chemistry, specifically alkaline batteries.
- Familiarity with basic physics concepts, including mass-energy equivalence (E=mc²).
- Knowledge of battery brands and their typical weight differences.
- Awareness of the psychological effects of perception in everyday objects.
- Investigate the mass change in alkaline batteries during discharge and the effects of gas venting.
- Explore psychological studies on perception of weight and how branding influences consumer behavior.
- Learn about the differences in construction and materials between various battery brands.
- Conduct experiments measuring the weight of fresh versus spent batteries using precise scales.
This discussion is beneficial for physicists, battery manufacturers, consumer product researchers, and anyone interested in the psychological aspects of consumer behavior related to everyday products like batteries.
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