FORENSIC 101 PART II

LIGHT

FORENSIC 101 PART II

40 questions • 1 y agoLIGHT

#100

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Is an electromagnetic energy that travels in a form of a wave with the speed of 186, 000 miles per second.

LIGHT

A light tight box designed to block unwanted or unnecessary light from reaching the sensitized material.

CAMERA

Is the light gathering mechanism of the camera that collect the reflected light coming from the object to form the image.

LENS

Composed of a highly sensitized chemical compound which is capable of being transformed into an image through the action of light and with some chemical processes.

SENSITIZED MATERIALS

Is the process necessary for reducing silver halides into a form so as a latent image and a positive image be made resulting to what we called Photograph.

CHEMICAL PROCESS

Is defined as an electromagnetic energy with the speed of 186,00 miles per second. Its wave travel is said to be characterized in certain extent based on velocity, wavelength and frequency of the number of vibration of the wave per second.

LIGHT

Is a form of energy, commonly refers to electromagnetic radiation that can be detected by human eye.

LIGHT

Of visible light as measured in nanometers (nm) where 1 nm = 1 billionth of a meter (10-9 meters). ✓ The wavelenght of visible light is between 400-700 nm. ✓ The combined effect of the complete range of radiation between 400-700 nm appears as white light to human eye.

THE WAVELENGTH

Is the type of light that produces different sensation when reach the human eye. It is the of light, which is capable of exciting the retina of the human eye. (400-700 millimicron or nanometer)

VISIBLE LIGHT

Lights in which their wavelength are either too short or too long to excite the retina human eye i.e. X-ray, Ultra-violet and Infra-red lights.

INVISIBLE LIGHT

This is electromagnetic energy having wavelength that range from 1-30 millimicrons. Object, is opaque (light cannot pass through ex. metal, wall, etc.) as seen by the naked can be penetrated rays

XRAYS

Ranges from about 200 to 400 millimicrons wavelength. This ray of light is also invisible like the infrared. Its position falls between X-ray and Visible wavelength. Designed to photograph fingerprints in multi colored background, documents that are altered, decipherment of erase writing and developing invisible writings

ULTRAVIOLET RAYS

Produces different sensations when they strike the human eye. The color of the different objects are usually mixture of light, of various wavelenght, and not a special color.

VISIBLE LIGHT

Is not a color or any kind of red. It is invisible ray and detected by the skin as

INFRARED RAYS

It is the deflection or bouncing back of light when it hits a surface.

REFLECTION

Is the angle between a light ray and the normal when the ray leaves the surface

ANGLE OF REFLECTION

Is the angle between a light ray and the normal when the ray Hits the surface

ANGLE OF INCIDENCE

The bending of light when passing from one medium to another.

REFRACTION

The bending of light when it hits a sharp edge of an opaque object. It is also described as the apparent bending of waves around small obstacles and the spreading out of waves past small openings.

DIFFRACTION

The nature of light to be absorbed in the process of dark sufaces. Example: Wearing a black shirt on a sunny day makes you feel hotter because the dark fabric absorbs more light (and heat).

ABSORPTION

Is when the light hits a transparent glass which would allow the light to pass through medium

TRANSMISSION

A lighting condition wherein objects in open space cast a deep on uniform shadow.

BRIGHT LIGHT

A lighting condition wherein the objects in open space cast a transparent shadow

HAZY LIGHT

A lighting condition wherein the objects in open space cast no shadow

DULL LIGHT

Can be used to enhance or replace natural light, such as during hazy or dull outdoor conditions.

ARTIFICIAL LIGHT

These lights provide a steady stream of illumination, making them suitable for situations where constant lighting is needed.

CONTINUOUS DURATION

Tube-shaped lamps coated with fluorescent powder. They emit a consistent, diffused light.// DIFFUSED LIGHT USED IN HOMES

FLUORESCENT LAMPS

Bulbs with a filament inside that glows when electricity passes through it. These produce a warm, yellow light.// HOUSEHOLD LIGHTING

INCANDESCENT LAMPS

High-intensity bulbs designed to provide powerful, focused light. They are used in studio settings.

PHOTOFLOOD LAMPS

These lights are used for brief, intense bursts of illumination, typically for capturing fast-moving subjects or creating specific effects.

SHORT DURATION

Produce light through a chemical reaction. They are no longer widely used but were once common for quick, bright flashes.

FLASH BULB

Produce light using a high-voltage electrical discharge through a gas-filled bulb.

ELECTRONIC FLASH

A cube with multiple flash bulbs for broad, even lighting.// MOSTLY OBSOLETE

STROBE CUBE

A flash that automatically fires in sync with the main flash of the camera or another flash unit.// ADDITIONAL LIGHT

SLAVE UNIT OR SLAVE FLASH

A circular light that surrounds the camera lens, providing even illumination with minimal shadows.// MACRO PHOTOGRAPHY

RING LIGHT

Additional flash units that can be attached to a camera or used separately to provide extra lighting.

ACCESSORY FLASH UNIT

Requires the photographer to manually set the exposure based on the distance and light Conditions.// Provides full control

MANUAL FLASH

Uses sensors to adjust light output based on the distance to the subject. Automatically adjusts the flash duration and intensity.// CONTROL AMOUNT OF LIGHT

AUTOMATIC FLASH

A flash unit integrated into the camera body.// CONVENIENT FOR QUICK

BUILT-IN FLASH UNIT

A flash unit that is placed away from the camera to create more dynamic lighting effects. The shutter speed that is compatible with the flash to ensure that the entire image is evenly// ALLOWS MORE CREATIVE

OFF CAMERA FLASH

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#100

Question list

Is an electromagnetic energy that travels in a form of a wave with the speed of 186, 000 miles per second.

LIGHT

A light tight box designed to block unwanted or unnecessary light from reaching the sensitized material.

CAMERA

Is the light gathering mechanism of the camera that collect the reflected light coming from the object to form the image.

LENS

Composed of a highly sensitized chemical compound which is capable of being transformed into an image through the action of light and with some chemical processes.

SENSITIZED MATERIALS

Is the process necessary for reducing silver halides into a form so as a latent image and a positive image be made resulting to what we called Photograph.

CHEMICAL PROCESS

LIGHT

Is a form of energy, commonly refers to electromagnetic radiation that can be detected by human eye.

LIGHT

THE WAVELENGTH

Is the type of light that produces different sensation when reach the human eye. It is the of light, which is capable of exciting the retina of the human eye. (400-700 millimicron or nanometer)

VISIBLE LIGHT

Lights in which their wavelength are either too short or too long to excite the retina human eye i.e. X-ray, Ultra-violet and Infra-red lights.

INVISIBLE LIGHT

This is electromagnetic energy having wavelength that range from 1-30 millimicrons. Object, is opaque (light cannot pass through ex. metal, wall, etc.) as seen by the naked can be penetrated rays

XRAYS

ULTRAVIOLET RAYS

Produces different sensations when they strike the human eye. The color of the different objects are usually mixture of light, of various wavelenght, and not a special color.

VISIBLE LIGHT

Is not a color or any kind of red. It is invisible ray and detected by the skin as

INFRARED RAYS

It is the deflection or bouncing back of light when it hits a surface.

REFLECTION

Is the angle between a light ray and the normal when the ray leaves the surface

ANGLE OF REFLECTION

Is the angle between a light ray and the normal when the ray Hits the surface

ANGLE OF INCIDENCE

The bending of light when passing from one medium to another.

REFRACTION

The bending of light when it hits a sharp edge of an opaque object. It is also described as the apparent bending of waves around small obstacles and the spreading out of waves past small openings.

DIFFRACTION

The nature of light to be absorbed in the process of dark sufaces. Example: Wearing a black shirt on a sunny day makes you feel hotter because the dark fabric absorbs more light (and heat).

ABSORPTION

Is when the light hits a transparent glass which would allow the light to pass through medium

TRANSMISSION

A lighting condition wherein objects in open space cast a deep on uniform shadow.

BRIGHT LIGHT

A lighting condition wherein the objects in open space cast a transparent shadow

HAZY LIGHT

A lighting condition wherein the objects in open space cast no shadow

DULL LIGHT

Can be used to enhance or replace natural light, such as during hazy or dull outdoor conditions.

ARTIFICIAL LIGHT

These lights provide a steady stream of illumination, making them suitable for situations where constant lighting is needed.

CONTINUOUS DURATION

Tube-shaped lamps coated with fluorescent powder. They emit a consistent, diffused light.// DIFFUSED LIGHT USED IN HOMES

FLUORESCENT LAMPS

Bulbs with a filament inside that glows when electricity passes through it. These produce a warm, yellow light.// HOUSEHOLD LIGHTING

INCANDESCENT LAMPS

High-intensity bulbs designed to provide powerful, focused light. They are used in studio settings.

PHOTOFLOOD LAMPS

These lights are used for brief, intense bursts of illumination, typically for capturing fast-moving subjects or creating specific effects.

SHORT DURATION

Produce light through a chemical reaction. They are no longer widely used but were once common for quick, bright flashes.

FLASH BULB

Produce light using a high-voltage electrical discharge through a gas-filled bulb.

ELECTRONIC FLASH

A cube with multiple flash bulbs for broad, even lighting.// MOSTLY OBSOLETE

STROBE CUBE

A flash that automatically fires in sync with the main flash of the camera or another flash unit.// ADDITIONAL LIGHT

SLAVE UNIT OR SLAVE FLASH

A circular light that surrounds the camera lens, providing even illumination with minimal shadows.// MACRO PHOTOGRAPHY

RING LIGHT

Additional flash units that can be attached to a camera or used separately to provide extra lighting.

ACCESSORY FLASH UNIT

Requires the photographer to manually set the exposure based on the distance and light Conditions.// Provides full control

MANUAL FLASH

Uses sensors to adjust light output based on the distance to the subject. Automatically adjusts the flash duration and intensity.// CONTROL AMOUNT OF LIGHT

AUTOMATIC FLASH

A flash unit integrated into the camera body.// CONVENIENT FOR QUICK

BUILT-IN FLASH UNIT

OFF CAMERA FLASH