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.
Blisters-Topic Overview. Blisters are fluid-filled bumps that look like bubbles on the skin. You may develop a blister on your foot when you wear new shoes that rub against your skin or on your hand when you work in the garden without wearing gloves.Home treatment is often all that is needed for this type of blister.Other types of injuries to the skin that may cause a blister include:ou may develop a blister on your foot when you wear new shoes that rub against your skin or on your hand when you work in the garden without wearing gloves. Home treatment is often all that is needed for this type of blister. Other types of injuries to the skin that may cause a blister include: