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Standard Screw

How I can know if my apartment walls are concrete or drywall?

I can drill with a standard screw very easily after a bit of hammering to get them started. I'm assuming because they do not need a masonry bit they should be cast, but I want to be sure.

If you go to a screw that is not understood then it is definitely concrete drywall. Concrete walls simply strip the screws or burn up if not classified for concrete. Plasterboard is also a white powder that comes from the holes, while the concrete dust is light gray. Most apartments are be cast as well, because it is cheap and easy to replace when someone puts a whole in it.

Eatmewhileimhot! – Screw The Standard

110V 24 LED White Standard Screw Base Light Bulb $3.59

24 White LED 110 V Standard Screw Base Light bulb Globe $8.00

STANDARD SCREW FOR SHOES & BOOT LIMA N Y AD TRADE CARD $15.00

110V 24 LED White Standard Screw Base Light Bulb $3.59

Cargo Trailer Truss Head BLT Standard Point Screws $10.00

Fender Standard Stratocaster Jack Plate Socket Screws $8.00

(10) BCW 1-Screw Card Holders Recessed Standard 20pt $6.95

(20) BCW 1-Screw Card Holders Recessed Standard 20pt $11.95

(5) BCW 1-Screw Card Holders Recessed Standard 20pt $3.95

(50) BCW 1-Screw Card Holders Sealed Box Standard 20pt $29.95

110 V 24 LED Standard Screw Base Light Bulb Globe 1.6W $0.99

Navtec Rod Rigging Accessories Standard Screw For 1/2″ $58.94

Globe 20 LED Warm White 110V Standard Screw Light Bulb $6.95

Globe 30 LED Warm White 110V Standard Screw Light Bulb $7.95

2pcs Globe 60 LED White 110V Standard Screw Light Bulb $23.50

Globe 38 LED Warm White 110V Standard Screw Light Bulb $9.25

2pcs Globe 60 LED White 110V Standard Screw Light Bulb $23.50

24 White LED 110 V Standard Screw Base Light bulb Globe $8.00

Truss Rod Cover Les Paul Standard CR SCREW for Epiphone $3.99

DAYTON SOCKET HEAD CAP SCREW/STANDARD HEAD 151976 $9.00

FMP STANDARD SCREW GAUGE $1.99

Lenco Standard Upper Mounting Bracket – 3 Screws 1 Wire $10.99

110 V 24 LED White Standard Screw Base Light Bulb Globe $3.49

RC Standard Control Horn Arm 27*20mm 5pcs + Screw 10pcs $0.24

24 White LED 110 V Standard Screw Base Light bulb Globe $8.00

80 LED White Spot Light Bulb Standard Screw Base 110V $12.34

80 LED White Spot Light Bulb Standard Screw Base 110V $12.34

1944 Screw Thread Standard catalog US Dept Commerce DC $7.00

19” Vivitar Long Cable Release with standard Screw End $7.99

HI HIGH STANDARD **VICTOR** Sight,Rib &Weight Screw set $9.99

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Dimmable E26 A60 Standard Household Base 50 Watt Incandescent Light Bulb Replacement with a 6 Watt LED, Warm White, 1012ww $22.00 So many of our customers have been asking for a fully dimmable standard replacement light bulb in the 40-50 watt light output range and after a lot of searching, we are pleased to finally be able to offer one that has the high quality and reliability you’ve come to expect. This bulb is the perfect screw in replacement for all your lighting applications that call for light output in that very popul…

Dimmable Par20 5 Watt LED Spot Light Bulb Replacement for Incandescent Halogen Track Lighting, Recess Light, E26 Standard Screw Base, Warm White, 1321ww $25.00 This is a 110vac dimmable led spot light bulb. This dimmable led light can be used with ordinary incandescent dimmers. . It uses 5 high power 1 Watt BridgeLux LEDs to project an extremely bright beam of light. It is available in cool white or warm white. The deep thin-fin aluminum body reduces the weight and provides more effective cooling to increase the light output and extend the life of the LE…

Bernardin Collection Elite Mason Jar Lids & Screw Bands – Standard – Gingham – Red $4.00 These metal SNAP lids and screw bands for mason jars seal home canned foods airtight. After heat processing and upon cooling, a vacuum is formed which seals the lids onto the jars. The lids are laquered to prevent rust and have an interior enamel coating to resist natural food acidity. Screw bands can be reused, but SNAP lids are designed for one-time use only.Pack of 6 lids and 6 screw bandsSize…

Empire Level 2760 Screw ID Gauge, SAE Standards 1 to 5/16-Inch $10.36 …

Color Changing LED Globe Light Bulb and Remote (Standard screw-in E27 base) $34.95 This is a globe shaped color changing bulb. It can display 15 colors, as well as white and comes with an easy to use remote control. * High brightness LED lighting technology * Advance heat management technology * Batteries included in remote control * Safe Operation: Equips with fuse and flame retardant plastics * Waterproof Protection: IP 65 * Bulb Shape: G24 Globe * Base Type: St…

Par38 LED Flood Light 42 SMD Standard Screw Base 110 240 Volt,warm White, 1314WW $29.95 This led spot light bulb can be used with any voltage from 110vac to 240vac. It uses 42 of the high powered Surface Mount (SMT) LED to project an extremely bright even Flood Light. It is available in cool white and warm white. The bulb has an expected life of 50,000 hours. These led light bulbs are great in track lighting, canister and recessed fixtures. The bulbs are not dimmable….

Ace Video Cable (3199247) $18.47 Sold as each. DVI video cable. Dual line, 24 pin, DVI-D to DVI-D connectors. Use for transmission of pure digital video signals from a DVI equipped audio/video component to a HDTV, flat panel display or other equipment with DVI connections. For high definition video (1080i and 720p) and standard video format smooth black PVC jacket with molded ends and easy grip captured screws. Resolution 2048 x …

Comprehensive F Plug to Plug Screw In Cable, 25′ $4.99 Standard Series RF video cables provide exceptional value while still providing Comprehensive quality and reliability. Standard Series RF video cables have one molded RF connector on one end. These cables utilize high quality bare copper braid shielding and Comprehensive’s famous X-tra flex jacket for superior interference rejection and durability. 22 gauge construction provides superior signal tr…

Ace Video Cable (3199262) $27.99 Sold as each. DVI video cable. Dual line, 24 pin, DVI-D to DVI-D connectors. Use for transmission of pure digital video signals from a DVI equipped audio/video component to a HDTV, flat panel display or other equipment with DVI connections. For high definition video (1080i and 720p) and standard video format smooth black PVC jacket with molded ends and easy grip captured screws. Resolution 2048 x …

Furman M-8Dx Standard Level Power Conditioning, 15 Amp, 9 Outlets with Wall Wart Spacing, Pullout Lights, Digital Voltmeter $150.00 The Furman M8DX Merit Series Power Conditioner is the perfect low-cost AC power solution for any rack mount system.Install an M8DX into the top slot of your rack, and the eight switched outlets in the rear panel will power up and protect all your equipment up to a 15-amp load. The M8DX features two slide out, swiveling light fixtures to provide discreet illumination of your equipment on stages, in…

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Shutter Speed, Aperture and ISO

Digital cameras are based on a sensor that reacts to the light reflecting off the subject of the photo you are taking. A certain amount of light is required in order to get a good shot, and that optimum amount of light is basically the same in any situation.

The three things we have to play with to adjust the amount of light are shutter speed, aperture and ISO.

Shutter speed and aperture are closely related. If you increase the aperture (lower F-Stop number) more light gets to the sensor, so the shutter speed has to be increased to adjust the amount of light. Conversely, if you choose a small aperture (bit F-Stop number) then the shutter will have to stay open longer to let in more light. Think of filling a bathtub. If you open the tap all the way (aperture), the tub will fill in less time, and you will turn the water off sooner (shutter speed).

In order to get a good exposure, you need the right combination os aperture and shutter speed. Most cameras have settings where you can adjust one and the camera will automatically adjust the other to compensate and give you a great shot every time. If you have a more professional camera, you may be able to override this feature and choose both manually, and alas, some point and shoot models give you almost no freedom. I have one model that has no aperture settings at all.

In terms of exposure, a narrow aperture/slow shutter speed will give you the same result as a wide aperture/fast shutter speed combination, but varying the aperture also affects the depth of field (DoF) or how much of your subjects background will be in focus. If you are trying to achive a blurry background like in our cherry blossom shot above, you will want a narrow depth of field which can be achieved by choosing a wide aperture setting (low F-stop number), or if you can’t control that, and fast shutter speed, which will force the camera to change the settings to increase aperture.

ISO used to indicate the sensitivity of the film you were using. A high ISO film was more sensitive, and needed less light. Now that most of us are using digital cameras, the ISO setting is actually just a simulation. Increasing the ISO number will cause the camera to have a higher shutter speed which may result in a small depth of field, but use it in moderation, as you may see more digital noise with a highter ISO (that awful ‘grainy’ effect)

Once again, if you want to achive that ellusive blurry background:

Use the widest aperture (lowest F-stop) if you can control it. If not try a high shutter speed or high ISO setting

Have the subject as far away from the background as possible.

Try to get the subject as close as you can. If possible use the macro setting on your camera and take the subject just inches from the lens.

Thanks to Elizabeth Laurel for the great shot of last spring’s cherry blossoms!