Gray Chang

8.03K subscribers

114 videos

Bird nesting box camera, semiconductor physics, solar astronomy, electronics, camera obscura, hand sanitizer formula, Raspberry Pi, Brother laser printer car...

Latest Videos

Chestnut-backed chickadees fledge over 5 minutes May 9, 2025 SF Bay Area

Chestnut-backed chickadees 3 days old, feeding & poop removal

Dad, mom chestnut-backed chickadees feed babies April 2025

Chickadees hatching early morning April 18, 2025 live cam youtube.com@graychang99live

Vicious fight two chestnut-backed chickadees in nesting box (viewer discretion advised) 2025

P-N junction, electronhole flow, exponential diode equation, valve, photovoltaic solar cell, LED

P-N junction, injected carrier profile, diffusion length L, electronhole currents vs X, Kirchhoff

P-N junction forward bias, Boltzmann, majority & minority injected carrier concentration profiles

P-N junction, depletion region, electric field barrier, built-in potential, reverse bias

Semiconductor P-N junction, electronhole diffusion & drift, non-uniform doping profile

Semiconductor doping, donoracceptor electronhole, mass action, pH analogy acidbase H+OH-

Electrons and holes in semiconductors intrinsicextrinsic silicon, donors & acceptors, mass action

Silicon & diamond unit cell atomic model, wafercrystal orientation, Miller indices (100) (111)

Reebok Classic Leather Unisex Running Shoe review (black GY0955) compared to old Club C

Chickadee nest-building to fledging time lapse

Birdhouse with ceiling webcam and natural-lighting windows

3-eyed bird (extra eye on side), chestnut-backed chickadee in nest box

Rare Oriental Turtle Dove in Palo Alto, California February-March 2022

Oak Titmouse in Bird Nesting Box Stereo 3-D View

3-D Stereo Cross-Eyed Image Viewing Methods Without Glasses

Egg-to-fledge time lapse, chestnut-backed chickadee feeding & waste removal

Chickadee mimics snake hiss and movement to scare off feared predator

Chickadee mom helps overstuffed baby share food with siblings & removes diaper

Chickadee feeds baby and discards diaper (fecal sac)

Mom & dad chestnut-backed chickadees feed babies and eat fecal sacs

Mom & dad chickadees feed newly hatched babies and remove eggshells

Chickadee fights snake intruder in nesting box -- frightening

Chickadee struggles to remove twig brought by wren into nesting box (050)

9 days of nest-building in a minute Chestnut-backed chickadee

Solar-Powered Dowsing for Buried Hoards of Gold & Silver Treasure (ha, ha)