गुस्ताफ डेलेन्

Gustaf Dalén as a young engineer with his bicycle in the photo studio 1895.

The AGA lighthouse "Blockhusudden" close to Stockholm, initially set up in 1912. When the lighthouse was electrified in 1980 it was determined that the sun valve had been working continuously since 1912 without the need for an overhaul.

गुस्ताफ डेलेन् छम्ह नांजाम्ह भौतिक शास्त्री ख। वेकयात वेकया ज्याया निंति भौतिक शास्त्रय् नोबेल सिरपा नं लःल्हागु दु।

जीवनी

स्वयादिसँ

• नोबेल सिरपा