Abstract: A gel-time detection apparatus includes a carrier, a stirring device, and an image-capturing device. The gel-time detection apparatus uses the carrier to liquefied powder to be detected, uses the stirring device to stir the liquefied powder and sense the torque of stirring the liquefied powder, and uses the image-capturing device to capture images of the liquefied powder, so as to determine a gel time according to a determination criterion relevant to the torque and the images. A gel-time detection method includes liquefying powder to be detected, stirring the powder, sensing the torque of stirring the liquefied powder, capturing images of the liquefied powder, and then determining a gel time according to a determination criterion relevant to the torque and the images. The determination criterion may include a torque predetermined threshold and an area-shrinkage-rate predetermined threshold.

Abstract: A gel-time detection apparatus includes a carrier, a stirring device, and an image-capturing device. The gel-time detection apparatus uses the carrier to liquefied powder to be detected, uses the stirring device to stir the liquefied powder and sense the torque of stirring the liquefied powder, and uses the image-capturing device to capture images of the liquefied powder, so as to determine a gel time according to a determination criterion relevant to the torque and the images. A gel-time detection method includes liquefying powder to be detected, stirring the powder, sensing the torque of stirring the liquefied powder, capturing images of the liquefied powder, and then determining a gel time according to a determination criterion relevant to the torque and the images. The determination criterion may include a torque predetermined threshold and an area-shrinkage-rate predetermined threshold.

Abstract: A light source assembly includes a first and a second light source modules. The first light source module includes a first light source, a first heat-dissipating base, and a first connecting part. The first heat-dissipating base has a first side and a second side. The first light source is mounted on the first side of the first heat-dissipating base, and the first connecting part extends outwardly from the second side of the first heat-dissipating base. The second light source module includes a second light source, a second heat-dissipating base, and a second connecting part. The second heat-dissipating base has a first side and a second side. The second light source is mounted on the first side of the second heat-dissipating base, and the second connecting part extends outwardly from the second side. The first connecting part is detachably and slidably engaged with the second connecting part.

Abstract: A light source assembly includes a first and a second light source modules. The first light source module includes a first light source, a first heat-dissipating base, and a first connecting part. The first heat-dissipating base has a first side and a second side. The first light source is mounted on the first side of the first heat-dissipating base, and the first connecting part extends outwardly from the second side of the first heat-dissipating base. The second light source module includes a second light source, a second heat-dissipating base, and a second connecting part. The second heat-dissipating base has a first side and a second side. The second light source is mounted on the first side of the second heat-dissipating base, and the second connecting part extends outwardly from the second side. The first connecting part is detachably and slidably engaged with the second connecting part.

Abstract: An exemplary illumination device includes a number of illuminants and a number of pivoting shafts. Each of the illuminants includes a casing and a light source received in the casing. The pivoting shafts pivotedly connect the casing. Each of the pivoting member is coupled to each two neighboring illuminants.