2/2. Using Sound: Dr Helen Czerski examines the extraordinary messages sound waves carry and how they help us understand the world around us. Also in HD. [AD,S]
1/2. Making Sound: Dr Helen Czerski investigates the science behind the sounds we're familiar with and the sounds that we normally can't hear, from Big Ben to Stromboli. Also in HD. [AD,S]
2/2. Using Sound: Dr Helen Czerski examines the extraordinary messages sound waves carry and how they help us understand the world around us. Also in HD. [AD,S]
1/2. Making Sound: Dr Helen Czerski investigates the science behind the sounds we're familiar with and the sounds that we normally can't hear, from Big Ben to Stromboli. Also in HD. [AD,S]
1/2. Making Sound: Dr Helen Czerski investigates the science behind the sounds we're familiar with and the sounds that we normally can't hear, from Big Ben to Stromboli. Also in HD. [AD,S]
2/2. Using Sound: Dr Helen Czerski examines the extraordinary messages sound waves carry and how they help us understand the world around us. Also in HD. [AD,S]
1/2. Making Sound: Dr Helen Czerski investigates the science behind the sounds we're familiar with and the sounds that we normally can't hear, from Big Ben to Stromboli. Also in HD. [AD,S]
2/2. Using Sound: Dr Helen Czerski examines the extraordinary messages sound wave carry, and how they help us understand the world around us. [AD,S,SL]
1/2. Making Sound: Dr Helen Czerski investigates the science behind the sounds we're familiar with and the sounds that we normally can't hear, from Big Ben to the Stromboli volcano. [AD,S,SL]