What’s “special” about these lightning strikes?

Cracked by badideabear, Sumanth Patlolla, Rogi, jowens, shrik, SV, Manish Achuth, KK, Dibyo, raklodramA, shivathilak, Siddarth Pai, Bharath, Rahulk, Thejas V R, Aditya S, finkle, mankuTimma, Vishwas B Sharma, Muthu sundaresan, Ananth and Amarendra Kumar

These notebooks are still so radioactive that you can’t just walk in to see them. You need to sign a waiver declaring that you wil not hold the library responsible for any radiation damage you may suffer before you are allowed too close! Whose notebooks?

Cracked by Jayaprakash B R, Urthstripe, shrik, Rogi, jowens, badideabear, Sumanth Patlolla, SV, Manish Achuth, KK, Dibyo, raklodramA, shivathilak, mankuTimma, Siddarth Pai, Rahulk, Bharath, Thejas V R, Aditya S, Godzilla101, finkle, Thiru d gr8, v.chandrashekar, Abhiram Bharadwaj Diddigi, Aditya Prabhu, Vishwas B Sharma, Bharath-TK, Bipin Banavalikar, Ananth, Amarendra Kumar and Sanjeet

Sitter sitter everywhere.

Map of where?

Cracked by Rogi, shrik, Anonymous, Sumanth Patlolla, Abhishek, Amarendra Kumar, Bharath, badideabear, Prasad, Aditya S, Jayaprakash B R, KK, jinz, raklodramA, Rahulk, Abhiram Bharadwaj Diddigi, Manish Achuth, jowens, Urthstripe, Dibyo, mankuTimma, Siddarth Pai, Thejas V R, Vishwas B Sharma, Bharath-TK, Bipin Banavalikar, Ananth, Shwetha Maiya and Sanjeet

I found out about this really cool part of history recently. Identify the device and the inventor, please.

Cracked by shrik, Rogi, Sumanth Patlolla, Amarendra Kumar, Bharath, badideabear, shivathilak, Aditya S, KK, raklodramA, Rahulk, Abhiram Bharadwaj Diddigi, Manish Achuth, jowens, Dibyo, mankuTimma, Siddarth Pai, Thejas V R, finkle, Vishwas B Sharma, Bharath-TK, Bipin Banavalikar, Ananth and Shwetha Maiya