21cm Hydrogen line by Joydeep bagchi

[https://web.iucaa.in/~rpl/Folder With pdf/nissim_h1.pdf](https://web.iucaa.in/~rpl/Folder With pdf/nissim_h1.pdf)

Some experiments that can be done by a horn antenna using the 21cm radiation,

Some experiments that can be done by a horn antenna using the 21cm radiation,