The British thermal unit (BTU or Btu) is a traditional unit of work equal to about 1055 joules. It is the amount of work needed to raise the temperature of one pound of water by one degree Fahrenheit (Physical analogue: one four-inch wooden kitchen match consumed completely generates approximately 1 BTU).
Blisters on feet can be caused by numerous things, including: 1  Forceful rubbing or friction on the foot. 2  Bone spurs or exostoses. 3  Burn. Freezing.  Chemical 1  exposure. Infection.  Allergic 1  reaction. Pinching  skin. Medical 1  condition. Foot perspiration.  Fungal infections such as Athletes foot.
What Causes Athlete's Foot? Tinea pedis is caused by dermatophytes, which are fungi that infect the skin, hair, and nails. Sometimes yeast can cause foot infections and rashes, often between the toes. People who are prone to tinea pedis are also susceptible to toenail fungal infections (onychomycosis).