Photos
nDman posted a photo:
Camera: Canon A-1
Lens: Canon 50mm f/3.5 Macro + Kenko 2x teleconverter + 70mm Extension Tube
Film: Fuji Sensia 200 (7 year Expired)
nDman posted a photo:
Camera: Canon A-1
Lens: Canon 50mm f/3.5 Macro + Kenko 2x teleconverter + 20mm Extension Tube
Film: Fuji Sensia 200 (7 year Expired)
nDman posted a photo:
Camera: Canon A-1
Lens: Canon 50mm f/3.5 Macro + Kenko 2x teleconverter + 20mm Extension Tube
Film: Fuji Sensia 200 (7 year Expired)
Bowtiemania posted a photo:
carina@home posted a photo:
mikest posted a photo:
carina@home posted a photo:
mikest posted a photo:
Jack from Paris posted a photo:
Project 365
by Lumix DMC-GF1 with Panasonic Lumix G 20mm F1.7 ASPH
Project 365
Portfolio dynamique
Jack from Paris posted a photo:
Project 365 - Métro parisien - station Porte Dauphine - en bas de l'avenue Foch
by Lumix DMC-GF1 with Panasonic Lumix G 20mm F1.7 ASPH
Project 365
Portfolio dynamique
Jack from Paris posted a photo:
Métro parisien - station Porte Dauphine - en bas de l'avenue Foch
by Lumix DMC-GF1 with Panasonic Lumix G 20mm F1.7 ASPH
Portfolio dynamique
Jack from Paris posted a photo:
Métro parisien - station Porte Dauphine - en bas de l'avenue Foch
by Lumix DMC-GF1 with Panasonic Lumix G 20mm F1.7 ASPH
Portfolio dynamique
for now just cristina posted a photo:
Krista76 posted a photo:
Krista76 posted a photo:
Jack from Paris posted a photo:
Métro parisien - une partie de la verrière de la station Porte Dauphine - en bas de l'avenue Foch
by Lumix DMC-GF1 with Panasonic Lumix G 20mm F1.7 ASPH
Portfolio dynamique
Jack from Paris posted a photo:
Métro parisien - détail station Porte Dauphine - en bas de l'avenue Foch
by Lumix DMC-GF1 with Panasonic Lumix G 20mm F1.7 ASPH
Portfolio dynamique
Giorgia Grassini posted a photo:
Lady Wulfrun posted a photo:
Close up of a cold-cathode neon gas discharge light in a shop window.
A cathode is any electrode that emits electrons. When used in electrical and electronic devices (most fluorescent lamps, vacuum tubes, etc.), the cathode is explicitly heated, creating a hot cathode. By taking advantage of thermionic emission, electrons can overcome the work function of the cathode without an electric field to pull the electrons out. But if sufficient voltage is present, electrons can still be stripped even out of a cathode operating at ambient temperature. Because it is not deliberately heated, such a cathode is referred to as a cold cathode, although several mechanisms may eventually cause the cathode to become quite hot once it is operating. Most cold cathode devices are filled with a gas which can be ionized. A few cold cathode devices contain a vacuum. en.wikipedia.org/wiki/Cold_cathode