Folk violin, body made of composite material with rice husk. Test 740

Experimental folk violin, body made of composite material with rice husk. Hundreds of millions of tons of rice husks are produced annually as a result of threshing around the world. For the most part, it is burned in furnaces or undergoes burial, which requires the involvement of large land plots. But rice husk does not disintegrate in the ground due to the presence of silicon dioxide in it. And when the husk is burned, substances are released that can negatively affect the nature and human health. Utilization of rice husks is an urgent problem all over the world, especially in countries where rice is the main cereal product (China, India, Egypt, South Korea, African countries and partly Russia, Uzbekistan).